ARE
106
Econometrics Homework 2
Winter
2010
A.
Havenner
Eight problems on two pages.
Computer
Problems:
The intent here
is
to get you to look around in Gretl in the context
of
a particular dataset and just generally
become familiar with it by clicking various tabs and seeing what you get.
Create a Word document to
post various results into as you do the exercises below, and then print it and
tum
it in with your name
clearly written on top so we can get an accurate gradesheet going. (Your student number
is
not necessary.)
1.
The data file
data23
contains data on U.S. unemployment, the CPI and its associated inflation rate,
and wage growth.
(i)
Use "DatalRead info" to see what these data are.
Copy and paste this information into your results
document (for Windows, select text with the mouse then use CTRL C to copy).
(ii)
Is this a time series dataset or a cross section dataset?
(iii)
Use "Data/Select all" combined with "View/Summary statistics" to obtain descriptive statistics for
this sample and paste it into your results document. On the printed output, prominently mark and label
the mean and standard deviation
of
the inflation rate. What
is
the variance
of
the inflation rate? What
is
its coefficient
of
variation? Why does the coefficient
of
variation use the standard deviation rather than
the variance? What
is
the definition
of
the coefficient
of
variation(see the text) and why might we calculate
it (very briefly)?
This preview has intentionally blurred sections. Sign up to view the full version.
View Full Document
This is the end of the preview.
Sign up
to
access the rest of the document.
 Winter '09
 Havenner
 Statistics, Standard Deviation, Variance, Inflation, Statistical hypothesis testing

Click to edit the document details