Data Analysis with Eviews
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Transcript of Data Analysis with Eviews
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Data Analysis with Eviews
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A. Entering Data
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Sample Excel Worksheet
filename : ubook years: 1990 - 1999
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Defining the Workfile
• Start Eviews
• Select File/New/Workfile
• Enter the frequency and the range
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Entering Frequency and RangeFrequency workfile Start date End date
Annual a 1990 1999
Semi-annual s 1990:1 1999:2
Quarterly q 1990:1 1999:4
Monthly m 1990:1 1999:12
Weekly* w 01/01/1990 31/12/1999
Daily[5 day]* d 01/01/1990 31/12/1999
Daily[7 day]* 7 01/01/1990 31/12/1999
Undated u 1 100
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Information Needed to Import
• name of the worksheet where the data are (unnecessary if the data file is a worksheet)
• the number of variables
• where (cell) the data (numbers) begin
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Importing the Excel Worksheet
• Procs/Import/Read Text-Lotus-Excel
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Entering the Worksheet Info(1) The Excel workbook must not be in use. Close it.(2) Must indicate the cell where the data begin.(3) Must indicate the number of Columns.
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Workfile Created
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Examine the Contents
1 2
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Using Commands
• workfile “name” “frequency” “range”
• data “variable name”
Start typing data
1999 January 814,8671999 February 753,2841999 March 803,4761999 April 729,6961999 May 751,9251999 June 795,2231999 July 853,4931999 August 775,7901999 September 773,0121999 October 822,6831999 November 821,0791999 December 1,455,792
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Resizing the Workfile• range
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B. Basic Data Analysisand Transformation
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Select the Variable
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Timeplot
Select: View/Line Graph
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Freeze
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Line/Shade in Freezed Version
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Descriptive StatisticsView/Descriptive Statistics/Histogram and Stats
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Storing Descriptive Statisticsscalar m=@mean(series_name) scalar s=@stdev(series_name)
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Creation of “Time” Variable
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Linear Trend Line
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Actual, Fitted, Residual Graph
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log and diff
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lead and lag
“series” to create a new series
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Open Data as One Group
Select Objects,Double Click, Select Open Group.
The Group can be Stored as a new
object
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Timeplot – Multiple Graph
Select Multiple Graphs/ Line
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Descriptive Statistics by Variables
Select: Descriptive Stat /Individual Samples
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Scatterplot and RegressionSelect month (x) and general (y) in that order; name.
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Scatterplot and Regression
400000
600000
800000
1000000
1200000
1400000
1600000
1800000
0 20 40 60 80 100 120 140
MONTH
GE
NE
RA
LGENERAL vs. MONTH
View/Graph/Scatter/Simple with Regression
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Using a Section of Data