(100 points) Using the data supplied from ECONOMAGIC (see Excel
attachment), estimate a forecasting model for the Number of New Homes Sold in
the U.S (NHS) measured in thousands of units as the dependent variable (Y). As your independent variables (X’s) use the Real Disposable Income ($B) and
the Unemployment Rate (%). The data are
collected Monthly beginning in January 1963 and ending August 2019.
1.
Initially, graph a time series
for each variable and give a brief description of each variable's
history.
2.
Graph a 3-dimensional
function using the NHS as the ‘z’
variable and the Real Disposable Income and Unemployment Rate as the ‘x’ and ‘y’ variables.
3.
Test for stationarity in the dependent
(NHS) variable only. Briefly discuss.
4.
If data are non-stationary correct the model and briefly explain.
5.
Next, estimate and interpret
a multiple regression equation. In your answer make sure to include a
discussion of the regression coefficients and all supporting
statistics (i.e. t-tests, R-square, F-test, etc.).
6.
Closely inspect the residuals from the regression
equation. Are there any discernible
patterns in these residuals with particular reference to outliers and/or leverages?
Briefly explain
7.
Now using this estimated regression model, provide and briefly interpret for the reader three ‘point’
and ‘interval’ predictions or forecasts (i.e., for the NHS). Use the following specified values for
the independent variables (selected to represent a steady state, a pessimistic,
and an optimistic economic environment).
a. Real
Disposable Income =$15,000B UnempRate=3.70%
(steady state forecast)
b. Real
Disposable Income =$14,000B UnempRate=5.0%
(pessimistic forecast)
c.
Real Disposable Income =$16,000B UnempRate=2.5%
(optimistic forecast)
8.
Now re-estimate the model using a double
logarithmic functional form (columns G-I) are the appropriate
transformations in your Excel worksheet) and interpret your regression equation
(i.e. regression coefficients, t-tests, R-square, F-test, residuals
outliers, leverages, etc.).
9.
Compare
and contrast the results from the logarithmic model (#8) with the unlogged model (#5).
10. Test to determine if the estimated
slope coefficient on the ln(Income) variable is equal to ‘1.00’;
that is, is there a one-to-one correspondence between NHS and Real Disposable
Income?
Submit your paper to this assignment
link as an attached WORD document and clearly label your answers as
ordered above (i.e., 1-10). Remember you may copy and paste the
relevant MINITAB/Economagic outputs but your final analysis must be in essay
format!
For your review, I
have attached an EXCEL and MINITAB documents created from ECONOMAGIC that
displays all the relevant data (including the raw as well as the logarithmic
transformation). Use the MINITAB document to complete the test
Also please insert your
name at the top of the WORD document and make sure when you cut and paste your relevant MINITAB output that
the resulting output is properly aligned.
I will start a THREAD on the Discussion Board if you have questions
concerning the Midterm
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