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EViews
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ThinkingAbout EViews
Workfile
Central place to keep
all of your work
Objects
Series (Numeric or Alpha)
Equations
Graphs
Groups
*Always comes with
series for a constant, c,
and residuals, resid
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Workfiles
Creating a Workfile
File New Workfile
Data Structure
Time Series Dated/Regular Frequency + Date RangeCross-Sectional Undated/Unstructured # of observations
Panel Balanced Panel
Save & Name(do not have to do this for this exercise)
New Pages
By clicking on the New Page label at the bottom of the
Workfile you can create new pages
Select By Frequency
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Exercise #1
Open the Excel file EViewsLab_data.xls, we
will be working with the Macro sheet
Create a new Workfile for todays workshop
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Importing Data
Copy/Past Method
1. Open new Empty Group Quick Empty Group
Click on Cell 1 and press the Up arrow on keyboard
2. Open Excel
Make sure variable names are one constant String (no spaces!) Troubleshoot for other problems
3. Copy Data
4. Paste into Eviews Cell 1
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Exercise #2
Import data Series from Excel sheet 1: Macro
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Importing Data
Import Directly1. Count the number of variables and CLOSE Excel file2. Proc Import Read Text-Locus-File
3. Browse for Excel file
4.
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Descriptive Statistics
Group Stores select series together
Object New Object Group Select Series Name
Descriptive Statistics
When group spreadsheet is open:
View Descriptive Statistics Common Sample
Covariance Correlations
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Exercise #3
Create a group for you INDEPENDENT variables(hint: consumption is your dependent variable)
Find the Standard Deviation for each variable
Run a correlation matrix of independent
variables to determine if you might havemulticolinearity (hint: look if off-diagonalabsolute values are bigger than 0.5)
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Create a new Equation In your Workfile:
Object New Object Equation
Separated by spaces:*Dependent variable
*Constant, c
*Independent variables
(or Group)
Regressions
Sample Range
Type of Regression
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Output
Name = Save to Workfile
Regression Tests & FixesEstimate: Modify
Regression
This View
Useful to Create Model
To Run Tests
Regression
Summary
Coefficient
Summary
Statistics
SAVE!
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Heteroskedasticity In Equation View:
View Residual Tests Heteroskedasticity Tests
Choose test
Look at Chi-square value
from a table
Fix:Click on Estimate
Click on Options check box for Heteroskedasticity consistent
coefficient covarariance OK
Regression Tests & Fixes
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Normality View Residual Tests Histogram-Normality Test
Look at Jarque-Bera stat
Fix: Depending on skew, you can adjust variables (ex:square, log, etc) or add/delete variables
Regression Tests & Fixes
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Correlation & Multicolinearity Create Correlation Matrix:
Select Group of independent variables
View Covariance Analysis
Select Correlations (unselect Covariance)
Off-diagonal values should be less than 0.5
Fix: Talk to your advisor
Regression Tests & Fixes
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Exercise #4
Plot fitted values vs. residuals
Check for Heteroskedasticity and fix if
necessary
Check for Multicolinearity
Check for Normality
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Changing/Creating Variables
Edit Mode
In Spreadsheet: Toggle Edit+/-
CAREFUL!No undo
Generate new variable
In Workfile:
Click on Genr Enter equation:
new variable name = equation
Regular math function keys
Lag: variable(-1)
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Just for Fun
Opening a non-excel data file Open peacekeeping.txt
Open Excel and open this .txt file from Excel
Delimitate correcly
From here you should be able to import into EViews like before
OR
Import directly into EViews: If ONLY Numeric
Create a new Workfile Page for unstructured data
Click on New Page at bottom of Workfile
Proc Import Read Text-Locus-File
Select TEXT-ASCII file
Specify number of variables
Specify correct delimitations
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Commands
Top, Left-Hand Command Box
Single commands
Batch (program)
Syntax:
Command (Option) Argument
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Exercise #5
Create a dummy variable for the alpha object
unintrvn
HINT: (@left(unintrvn, 2) = No)
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Help!
For general instruction or commands:
EViews PDFs !
Start Programs EViews6
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All Done!
If you would like more, individual help
please see the Technical Statistical
Coordinator