Quiz -Levels of Measurement for the Variable

7/23/2019 Quiz -Levels of Measurement for the Variable

http://slidepdf.com/reader/full/quiz-levels-of-measurement-for-the-variable 1/71

Levels of measurement

for the variable

•

(N)ominal• (O)rdinal• (I)nterval• (R)atio



The nominal type, sometimes also calledthe qualitative type, diferentiates betweenitems or subjects based only on their namesandor (meta!)cate"ories and other #ualitativeclassi$cations they belon" to%

Categorical (Nominal)



dia"nostic cate"ories se& o' the participant ("ender) classi$cation based on discrete characteristics (e%"%, hair

color) "roup aliation (e%"%, Republican, emocrate, *oy +cout ,

nationality, ethnicity, lan"ua"e, "enre, style, biolo"icalspecies, visual pattern, etc%)

the town people live in a persons name menu items selected any yesno distinctions most 'orms o' classi$cation (species o' animals or type o'

tree) location o' dama"e in the brain

Nominal Scale Examples



The ordinal type allows 'or ran- order (.st,/nd, 0rd, etc) by which data can be sorted,but still does not allow 'or relative degree ofdierence between them%

Ordinal 1ariable

http://en.wikipedia.org/wiki/Rank_order

http://en.wikipedia.org/wiki/Rank_order



any ran- orderin"

class ran-s social class cate"ories order o' $nish in a race data with dichotomous (or dichotomi2ed) values

such as sic- vs% healthy when measurin"health, "uilty vs% innocent when ma-in" jud"ments in courts, wron"'alse vs% ri"httruewhen measurin" truth value,

non-dichotomous data consistin" o' a spectrumo' values, such as completely a"ree, mostlya"ree, mostly disa"ree, completely disa"reewhen measurin" opinion

Ordinal Scale Examples



3n interval variable is similar to an ordinalvariable, e&cept that the intervals betweenthe values o' the interval variable aree#ually spaced% nterval data is li-e ordinale&cept we can say the intervals betweeneach value are e#ually split%

Example is temperature in de"rees4ahrenheit%

nterval variable



scores on scales that are standardi2ed (i%e%, with an arbitrarymean and standard deviation, usually desi"ned to always "ive apositive score)

scores on scales that are -nown to not have a true 2ero (e%"%,most temperature scales e&cept 'or the 5elvin +cale)

scores on measures where it is not clear that 2ero means none o'the trait (e%"%, a math test)

scores on most personality scales based on countin" the numbero' endorsed items

nterval Scale Examples



"atio means, li-e Interval, that there is ameasurement 'or the ran-in", but there isalso a true 2ero% 3 true 2ero means thatthere is lac- o' the #uality bein" measured%+ome e&amples are income, where thediference between 6.7,777 and 6..,777 is-nown and 2ero means complete lac- o'income%

Ratio scale



time to complete a tas- number o' responses "iven in a speci$ed

time period

wei"ht o' an object si2e o' an object number o' objects detected number o' errors made in a speci$ed time

period proportion o' responses in a speci$ed

cate"ory

"atio Scale Examples



8isted below are a number o' e&ercisesdesi"ned to 'amiliari2e students with theclassi$cation o' measures usin" +tevensclassi$cation system% 4or each o' themeasures listed, determine what scale o'measurement most closely appro&imates themeasure as described%

Exercises



#uestion $

.) The number o' #uestions as-ed by acustomer durin" a simulated encounterwith a salesperson9



Ratio

%ns&er for #uestion $



/) The reli"ious "roup that onealiates with9

#uestion '



nominal

%ns&er for #uestion '



0) The time it ta-es tocomplete a chec-in" tas-9

#uestion



Ratio

%ns&er for #uestion



:) The score on a 0;!item scaleo' ambivalence9

#uestion



interval

%ns&er for #uestion



;) The ran- o' a persons salarywithin the company9

#uestion *



ordinal

%ns&er for #uestion *



<) ran- order based on I= score inthe sample

#uestion +



ratio

%ns&er for #uestion +



>) the s#uare 'oota"e o' each participantshouse or apartment9

#uestion ,



ratio

%ns&er for #uestion ,



?) The si2e o' the cerebellum e&pressed asa volume

#uestion



Ratio

%ns&er for #uestion



@) the number o' 'rustrated comments made

durin" a laboratory ne"otiation tas9

#uestion .



Ratio

%ns&er for #uestion .



.7) The time it ta-es 'or a couple to resolvea custody issue durin" court orderedmediation

#uestion $/



Ratio

%ns&er for #uestion $/



..)+core on the *ec- epression Inventory

(a pencil and paper depression scale)

#uestion $$



Interval

%ns&er for #uestion $$



./) Ratin"s o' an"er shown by thoseinvolved in courtroom testimony

#uestion $'



Intervalor Ordinal

%ns&er for #uestion $'



.0) The number o' pound lost durin" a si&!wee- diet9

#uestion $



Ratio




.:) the proportion o' wei"ht lost durin" a si&!wee- diet9

#uestion $



Ratio




.;) The heart rate o' the participant9

#uestion $*



Ratio

%ns&er for #uestion $*



The percent shi't in heart rate over baselinedurin" an emotionally demandin" tas-9

#uestion $+



Ratio

%ns&er for #uestion $+



The percent o' errors made on aclassi$cation tas-

#uestion $,



Ratio

%ns&er for #uestion $,



The number o' 'alse alarm responses in amonitorin" tas-9

#uestion $



Ratio




The types o' "ramatical errors made in a writin"sample

#uestion $.



nominal

%ns&er for #uestion $.



ones ice cream pre'erence9

#uestion '/



nominal

%ns&er for #uestion '/



how #uic-ly a person "ives up on animpossible tas- that loo-s li-e it should bepossible

#uestion '$



Ratio

%ns&er for #uestion '$



a students +3T score

#uestion ''



interval

%ns&er for #uestion ''



the percentile ran- 'rom an achievement

test9

#uestion '



ordinal




the type o' cate"ori2ation errors in a sortin"tas-9

#uestion '



nominal




the pattern o' scores on the AABI personalityinventory

#uestion '*



nominal

%ns&er for #uestion '*



the a"e at which one went on his or her $rstdate

#uestion '+



Ratio

%ns&er for #uestion '+



the number o' children in your 'amily

#uestion ',



Ratio

%ns&er for #uestion ',



the score on an an&iety sensitivity scale

#uestion '



Ratio




whether one has a pet

#uestion '.



Ratio

%ns&er for #uestion '.



the teachers ran-in"s o' cooperativeness inthe classroom

#uestion /



Ratio

%ns&er for #uestion /

Quiz -Levels of Measurement for the Variable

Documents

Transcript of Quiz -Levels of Measurement for the Variable