1 Social Science Data Bases CSU Dominguez Hills April 15, 2011 CSU Dominguez Hills.

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Social ScienceSocial ScienceData BasesData Bases

CSU Dominguez HillsCSU Dominguez Hills

April 15, 2011April 15, 2011

April 15, 2011April 15, 2011 CSU Dominguez HillsCSU Dominguez Hills

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Sponsored by Sponsored by

http://www.ssric.org http://www.ssric.org

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PresentersPresenters John L. Korey, Political Science, Cal John L. Korey, Political Science, Cal

Poly Pomona jlkorey@csupomona.eduPoly Pomona jlkorey@csupomona.edu

Eugene J. Turner, Geography, CSU Eugene J. Turner, Geography, CSU Northridge eugene.turner@csun.edu Northridge eugene.turner@csun.edu

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Workshop AgendaWorkshop Agenda Overview of the SSRICOverview of the SSRIC

Data ArchivesData Archives ICPSRICPSR FieldField CensusCensus RoperRoper

Other DataOther Data Other WorkshopsOther Workshops

Your FeedbackYour Feedback

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SSRIChttp://www.ssric.org

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The CouncilThe Council Oldest CSU affinity group (since 1972)Oldest CSU affinity group (since 1972)

Representatives from CSU campuses meet Representatives from CSU campuses meet three times per yearthree times per year

Negotiates with data providers for access to Negotiates with data providers for access to datadata

Promotes use of data analysis in research Promotes use of data analysis in research and teachingand teaching

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The CouncilThe Council Annual student research conferenceAnnual student research conference

April 29, San Jose StateApril 29, San Jose Statehttp://www.ssric.org/participate/src http://www.ssric.org/participate/src

Sponsors travel to ICPSR summer workshops Sponsors travel to ICPSR summer workshops in Ann Arbor, Michiganin Ann Arbor, Michigan http://www.ssric.org/participate/icpsr_summerhttp://www.ssric.org/participate/icpsr_summer

Field Poll Faculty Fellowship (deadline April Field Poll Faculty Fellowship (deadline April 15) 15) http://www.ssric.org/participate/field_institute http://www.ssric.org/participate/field_institute

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Social Science DatabasesSocial Science Databases

The California State University subscribes to The California State University subscribes to social science databases to supportsocial science databases to support teachingteaching researchresearch administrationadministration

Available to campuses by annual subscriptionAvailable to campuses by annual subscription

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Social Science DatabasesSocial Science Databases Assistance from the SSRICAssistance from the SSRIC

Note:Note: SSRIC members are not staff data SSRIC members are not staff data consultants or technical assistance providers, but consultants or technical assistance providers, but we will do what we can to help students, faculty, we will do what we can to help students, faculty, and staff to access dataand staff to access data

Campus representativesCampus representativeshttp://www.ssric.org/reps http://www.ssric.org/reps

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Inter-university Consortium for Political and Social Research Inter-university Consortium for Political and Social Research (ICPSR)(ICPSR)

Field PollField Poll

Census DataCensus Data

Roper Center for Public Opinion ResearchRoper Center for Public Opinion Research

Social Science DatabasesSocial Science Databases

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Accessing the data basesAccessing the data bases On-campus access to data bases is IP On-campus access to data bases is IP

authenticatedauthenticated

Off-campus accessOff-campus access Field: not availableField: not available

Roper: uses library as proxy server -- works just Roper: uses library as proxy server -- works just like other library data bases like other library data bases

ICPSR: first time, uses library proxy server, after ICPSR: first time, uses library proxy server, after that, you can access from anywhere but you must that, you can access from anywhere but you must reauthenticate every 6 monthsreauthenticate every 6 months

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ICPSRICPSRInter-university Consortium for Inter-university Consortium for Political and Social ResearchPolitical and Social Research

http://www.icpsr.org

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ICPSRICPSR Primary social science data archive for the U.S.Primary social science data archive for the U.S.

Founded in 1962; CSU joined in 1972Founded in 1962; CSU joined in 1972 Over 600 member institutions worldwideOver 600 member institutions worldwide

ServicesServices Vast data archive accessible via the web (ICPSR Vast data archive accessible via the web (ICPSR

Direct)Direct) Summer programSummer program Instructional resourcesInstructional resources

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ICPSRICPSR

Teaching

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ICPSRICPSR

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ICPSRICPSR

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Using ICPSR DirectUsing ICPSR Direct Locate the study Locate the study

Select the data for downloadSelect the data for download

Download the dataDownload the data

Import the data for statistical analysisImport the data for statistical analysis

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Find and Analyze DataFind data

Analyze data online

Topical archives

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Searching for Data

•Type in key words (e.g., gun control)•Click search

Search terms are not case sensitive if all lower case

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Search Results

Sort by time period (newest)

Click on link

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Downloading the data

View study description

Download all files

CSU Dominguez HillsCSU Dominguez Hills

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Agree to the Terms of Use

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Saving the Files

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Select Files and Place Them Where You Want to Save Them

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What’s in the File?

Look in the layers of subfolders until you find the DS0001 folder

It will include the: Codebook (pdf file) Questionnaire (pdf file) SPSS file (in this case, it’s a .sav file) Other files

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Open the sav File in SPSS

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Other Types of Files you Other Types of Files you Might EncounterMight Encounter

SPSS portable (.por) filesSPSS portable (.por) files Will work on all platformsWill work on all platforms Tell SPSS to look for a .por fileTell SPSS to look for a .por file

Raw data (ASCII) file with SPSS syntax (.sps) fileRaw data (ASCII) file with SPSS syntax (.sps) file You’ll have to create your own .sav fileYou’ll have to create your own .sav file See next slideSee next slide

Raw data file with only a codebookRaw data file with only a codebook You’ll have to create your own syntax fileYou’ll have to create your own syntax file SPSS Intro workshop discusses how to do thisSPSS Intro workshop discusses how to do this

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What’s a Syntax File?What’s a Syntax File? A syntax file is a set of commands to convert a raw A syntax file is a set of commands to convert a raw

ASCII data file into an SPSS system fileASCII data file into an SPSS system file ASCII + SPSS syntax file = SPSS system fileASCII + SPSS syntax file = SPSS system file For More Information: For More Information:

http://www.ssric.org/data/icpsr_direct#syntaxhttp://www.ssric.org/data/icpsr_direct#syntax

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Other ICPSR ResourcesOther ICPSR Resources SSRIC ICPSR GuideSSRIC ICPSR Guide

ICPSR Data Use TutorialICPSR Data Use Tutorial

Social Science Variables DatabaseSocial Science Variables Database

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The Field PollThe Field Poll

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The Field (California) PollThe Field (California) Poll Established in 1947Established in 1947

Independent, non-partisan survey Independent, non-partisan survey of California public opinionof California public opinion

Wide range of political and social Wide range of political and social topicstopics

Multiple polls each yearMultiple polls each year

Mervin FieldMervin Field

http://www.field.comhttp://www.field.com

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Accessing Field DataAccessing Field Data Set up your browser Set up your browser

Find polls and data setsFind polls and data sets

Download data setsDownload data sets

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Setting up your browserSetting up your browser Requires setting Requires setting passive FTP accesspassive FTP access

Can set up browser for Can set up browser for folder viewfolder view or or FTP FTP directory viewdirectory view

See the instructions for details:See the instructions for details:http://www.ssric.org/data/field_polls http://www.ssric.org/data/field_polls

You will only need to do this once for your You will only need to do this once for your browser and user accountbrowser and user account

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Finding PollsFinding Polls Find the poll number Find the poll number

Field Poll Archives Field Poll Archives (http://field.com/fieldpollonline/subscribers/)(http://field.com/fieldpollonline/subscribers/)

American Public Opinion IndexAmerican Public Opinion Index Check with your library for printed and/or Check with your library for printed and/or

microfiche versionsmicrofiche versions

The CALPOLL windowThe CALPOLL window Accessible via UCDataAccessible via UCData

You will be using the poll number to select You will be using the poll number to select the data set for download.the data set for download.

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Searching Polls with UCDATASearching Polls with UCDATA

Uses SDAUses SDA

Does not include last couple of yearsDoes not include last couple of years

Gives you the frequency distributions of the Gives you the frequency distributions of the variables you selectvariables you select

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UC Datahttp://ucdata.berkeley.edu

Click on Field Polls

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Field Polls on UCDATA

Click on search

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Searching

I selected 2000’s

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Keywords

Enter gun control

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Search Results

Click View

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Results from SDA

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Downloading the Data

Click Download

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Choosing the File

Double click cal0003 since you want to download that folder

Note that this is directory view

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Saving the Files

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Select the Folder

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Open the Data in SPSSOpen the Data in SPSS

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Other Field ResourcesOther Field Resources SSRIC Field Poll GuideSSRIC Field Poll Guide

Field News Releases and California Opinion Field News Releases and California Opinion IndexesIndexes

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The U. S. Census of The U. S. Census of Population and Population and

HousingHousing

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U. S. Census CollectionsU. S. Census CollectionsConstruction

Transportation

For. TradeHousing

Business

GovernmentsAgriculture

Mineral Indus.

Manufacturing

Population

1800 1850 1900 1950 1990

1787 – Framers of Constitution – Needed to resolve 2 Issues

How to deal with apportionment of power for HouseHow to assess taxes

land value, persons?

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Census of Population and HousingCensus of Population and Housing Began in 1790Began in 1790

U. S. marshals went to each U. S. marshals went to each householdhousehold

Continuing fight over additional Continuing fight over additional social and housing questions – social and housing questions – costcost

1960 – Most questions in sample 1960 – Most questions in sample questionnaire, Beginning of questionnaire, Beginning of mailouts and digital tabulationmailouts and digital tabulation

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Modern Census ConcernsModern Census Concerns A. GeographyA. Geography

Data aggregated for different area unitsData aggregated for different area units Choice may affect research resultsChoice may affect research results Each level has a unique Each level has a unique Summary Level Summary Level codecode

Selected aggregations by geography Nation

Region (4)Division (9)State (52)

County Place County Subdivision

Tract Tract Block Group Block Group

Block Block

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Modern Census ConcernsModern Census Concerns B. Question and Tabulation ChangesB. Question and Tabulation Changes

Race, education, income, age, occupation ….Race, education, income, age, occupation ….

can change between censusescan change between censuses Need to consult documentation appendicesNeed to consult documentation appendices

i.e. Census 2000 allowed people to indicate more than a single race which i.e. Census 2000 allowed people to indicate more than a single race which complicates race tabulationscomplicates race tabulations

i.e. Census 2010 socioeconomic data collected in ani.e. Census 2010 socioeconomic data collected in an

annual sampleannual sample

Some questions have a different Some questions have a different Universe Universe or population at riskor population at risk ie Educational Attainment: Persons 25+ yrsie Educational Attainment: Persons 25+ yrs

Categories are defined by Census BureauCategories are defined by Census Bureau ie Age: 0-4 yrs, 5-9 yrs, 10-14yrs …ie Age: 0-4 yrs, 5-9 yrs, 10-14yrs …

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Census 1990 and 2000 TabulationsCensus 1990 and 2000 TabulationsA. Some data collected on short form from everyoneA. Some data collected on short form from everyone

Race, age, family characteristicsRace, age, family characteristics Reported in Summary Files 1 and 2Reported in Summary Files 1 and 2

B. Some questions collected on long form or sample B. Some questions collected on long form or sample questionnairequestionnaire

About 1 in 6 householdsAbout 1 in 6 households Education, income, occupation, ancestry, commuting time, Education, income, occupation, ancestry, commuting time,

housing tenure, vehicles….housing tenure, vehicles…. Reported in Summary Files 3 and 4Reported in Summary Files 3 and 4

C. Note SF2 and SF4 also tabulate data for specified C. Note SF2 and SF4 also tabulate data for specified race, Hispanic, and Native American groupsrace, Hispanic, and Native American groups

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Census 2010 Census 2010 The American Community SurveyThe American Community Survey

A. Will replace SF3 and SF4A. Will replace SF3 and SF4 ACS has similar questions and dataACS has similar questions and data Some tables have fewer categoriesSome tables have fewer categories

B. Based on annual survey of 3 million householdsB. Based on annual survey of 3 million households

Area units over 65,000 reported each yearArea units over 65,000 reported each year Area units over 20,000 reported as 3-year averageArea units over 20,000 reported as 3-year average Area units less than 20,000 reported as 5-year averageArea units less than 20,000 reported as 5-year average

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Census 2010 Census 2010 The American Community SurveyThe American Community Survey

C. Most questions report a C. Most questions report a Margin of ErrorMargin of Error 90 percent of values will lie within it90 percent of values will lie within it Increases with smaller sample size (ie tracts)Increases with smaller sample size (ie tracts)

Actual accuracy less than decennial census so data may Actual accuracy less than decennial census so data may be more challenging for small areasbe more challenging for small areas

First release of 5-year average (2005-2009) in 2010First release of 5-year average (2005-2009) in 2010

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Census TabulationsCensus TabulationsPublic Use Microdata Sample (PUMS)Public Use Microdata Sample (PUMS)

A. 5% and 1% sample of householdsA. 5% and 1% sample of households Are for individuals so users aggregate to categories in Are for individuals so users aggregate to categories in

software such as SPSSsoftware such as SPSS Provide great flexibility for analysisProvide great flexibility for analysis

B. 5% geography reported for Public Use Microdata Areas B. 5% geography reported for Public Use Microdata Areas of at least 100,000 personsof at least 100,000 persons

May range from parts of a city to multiple countiesMay range from parts of a city to multiple counties Some are aggregations of numerous non-contiguous areasSome are aggregations of numerous non-contiguous areas

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www.census.govwww.census.gov

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Will replace legacy factfinder by fall 2011Census 2000 will be added in May 2011

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Click Topics and select Race and EthnicityThen select Ancestry

CSU Dominguez HillsCSU Dominguez Hills

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Click Geography and select City or TownThen select Ancestry

CSU Dominguez HillsCSU Dominguez Hills

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At the top window enter: Los Angeles andclick Go

CSU Dominguez HillsCSU Dominguez Hills

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Select Los Angeles city, California andclick the Add button. Then close the window.

CSU Dominguez HillsCSU Dominguez Hills

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Choose the QT-P13 button and thenthe View button.

CSU Dominguez HillsCSU Dominguez Hills

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When done, click the Back to Search button

CSU Dominguez HillsCSU Dominguez Hills

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Click the Download button (Ancestry checked)

CSU Dominguez HillsCSU Dominguez Hills

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Extract the desired files and open in Excel

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The IPUMS web site for The IPUMS web site for PUMS dataPUMS data

http://www.ipums.umn.edu/

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Select the Household menu and the Geographic option.

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If you later wish to subset data for a particular state or PUMA check the STATEFIP and PUMA buttons. (green check)

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Select the Person menu and then choose variables from within the list of topics.

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Here, Race was selected. Note the Codes column for an explanation of content.

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Race comes in both a General version and a Detailed version.

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When done, choose the Select Samples button.

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Deselect the Default U.S. sample button and click the 2000 5% button for this example.Click the Submit sample selections button.

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2

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Choose the View Cart option.

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In the Data Cart make sure you have all items.Then click the Check Out button.

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Enter your email to login or to set up a new account.

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Leave the Extract file type as Rectangular and click Continue.

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Under the Set variable options window you may limit the scope of the extract with the Select Cases option. Here, choose the Select Cases button under STATEFIP and Continue.

The Attach Characteristics option allows you to add characteristics from the mother, father, or spouse to this person.

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Choose a state [Colorado] from among all states for your extract. Click Continue.

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Check your extract and make any needed changes.

Write a brief description of your extract under the Description window.

Click the Submit extract button at the bottom to submit your extract request.

Races in different states

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You may wait awhile for the extract or use the link from an email to download your data.

You will receive an SPSS syntax file, a codebook of your variables, and the data.

Use the SPSS syntax file to convert the data to a SAV file for processing.

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Census Data at ICPSRCensus Data at ICPSR

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Find & Analyze DataFind & Analyze Data

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Find & Analyze DataFind & Analyze Data

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Find & Analyze DataFind & Analyze Data

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Other ICPSR Demographic Data

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Other ICPSR Demographic Data

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The Roper Center for The Roper Center for Public Opinion Public Opinion

ResearchResearch

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http://www.ropercenter.uconn.eduhttp://www.ropercenter.uconn.edu

Roper Express

RoperExplorer

iPoll

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Searching for Data SetsSearching for Data Sets

Hover overQuick Links

Then click “Search for Datasets”

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Sign InSign In

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Sign InSign In

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Searching for Data SetsSearching for Data Sets

SpecifySpecify KeywordsKeywords Date rangeDate range CountryCountry

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Searching for Data SetsSearching for Data Sets

Enter Search Terms

Click on“Search”

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Search ResultsSearch Results

Download Data

Examine Questions

Online Analysis

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Dataset AbstractDataset Abstract

Study Description

Download Data

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Downloading the FilesDownloading the Files

Click on “Download Dataset”

Click on SPSS portable file

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Downloading the FilesDownloading the Files

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What if nothing is available?What if nothing is available?

Some documentation and/or data sets are not available Some documentation and/or data sets are not available on-line. If you are interested in one of these, email the on-line. If you are interested in one of these, email the survey number and the title to:survey number and the title to:

Ed Nelson at ednelson@csufresno.eduEd Nelson at ednelson@csufresno.edu

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View Questions in iPOLLView Questions in iPOLL

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Get Question DetailsGet Question Details

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Question DetailsQuestion Details

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Online AnalysisOnline Analysis

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Run AnalysisRun Analysis

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Analysis - ResultsAnalysis - Results

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More About iPOLLMore About iPOLL

Data base of over 500,000 questionsData base of over 500,000 questions

Includes frequency distributions allowing students Includes frequency distributions allowing students to do trend analysis onlineto do trend analysis online

You will not need a user name or password from on-You will not need a user name or password from on-campus, since the CSU will be IP authenticated. campus, since the CSU will be IP authenticated. You will be prompted for your email addressYou will be prompted for your email address

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Log in to iPOLL

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Searching iPOLLSearching iPOLL

Search for keywordSearch for keyword

Click on Boolean or Wildcard for helpClick on Boolean or Wildcard for help

Let’s search for relig% (note: % is the Let’s search for relig% (note: % is the wildcard)wildcard)

Select the topic of religionSelect the topic of religion

Use date from 1/1/2000 to today’s dateUse date from 1/1/2000 to today’s date

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Search

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Results

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Instructional ResourcesInstructional Resources

Click here

Then choose one of these

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Fundamentals of Polling

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Analyzing Polls

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Teaching Tools

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Other Roper ResourcesOther Roper Resources SSRIC Roper GuideSSRIC Roper Guide

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Other Data

Other DataOther Data

Instructional Subsets Instructional Subsets (http://www.ssric.org/node/361) (http://www.ssric.org/node/361)

Other (http://www.ssric.org/data/other) Other (http://www.ssric.org/data/other)

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Other Workshops

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Workshops on SPSS

SPSS – introductory workshop Creating SPSS data file Transforming data Descriptive statistics

SPSS – intermediate workshop Crosstabulations Using means Correlation and regression Charts

April 15, 2011April 15, 2011 CSU Dominguez HillsCSU Dominguez Hills 128128

Workshop on Online Statistical Analysis

SDA (Survey Documentation and Analysis) Requires no site license

Extremely easy to learn

Excellent for classes where you want to introduce students to statistical analysis

Tools available – frequencies, crosstabulations, correlation and regression

April 15, 2011April 15, 2011 CSU Dominguez HillsCSU Dominguez Hills 129129

Workshop on Data in the Classroom

Statistical literacy – issues and examples Causality Experimental and survey design Unintentional consequences Sampling and statistical inference Change over time

Where do we get the data?

April 15, 2011April 15, 2011 CSU Dominguez HillsCSU Dominguez Hills 130130

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