Question 1
Shown below are rental and leasing revenue figures for office machinery and equipment in the
United States over a seven-year period according to the U.S. Census Bureau. Use
these data to run a linear regression and then forecast the rental and
leasing revenue for the year 2012.
United States over a seven-year period according to the U.S. Census Bureau. Use
these data to run a linear regression and then forecast the rental and
leasing revenue for the year 2012.
Year Rental and Leasing ($ millions)
2004 5,860
2005
6,632
6,632
2006
7,125
7,125
2007 6,000
2008
4,380
4,380
2009
3,326
3,326
2010
2,642
2,642
Question 2
Suppose a researcher gathered survey data from 19 employees and asked the employees to rate their job
satisfaction on a scale from 0 to 100 (with 100 being perfectly satisfied).
Suppose the following data represent the results of this survey. Assume that
relationship with supervisor is rated on a scale from 0 to 50 (0 represents
poor relationship and 50 represents an excellent relationship), overall quality
of the work environment is rated on a scale from 0 to 100 (0 represents poor
work environment and 100 rep resents an excellent work environment), and
opportunities for advancement is rated on a scale from 0 to 50 (0 represents no
opportunities and 50 represents excellent opportunities).
satisfaction on a scale from 0 to 100 (with 100 being perfectly satisfied).
Suppose the following data represent the results of this survey. Assume that
relationship with supervisor is rated on a scale from 0 to 50 (0 represents
poor relationship and 50 represents an excellent relationship), overall quality
of the work environment is rated on a scale from 0 to 100 (0 represents poor
work environment and 100 rep resents an excellent work environment), and
opportunities for advancement is rated on a scale from 0 to 50 (0 represents no
opportunities and 50 represents excellent opportunities).
a) What is the regression formula?
b) How reliable do you think the estimates will be based on this formula? How can you tell?
c) Are there any variables that do not appear to be good predictors of Job satisfaction? How can you tell?
d) If a new employee reports that her relationship with her
supervisor is 40, finds the quality of the work environment to be scored at 75,
works 60 hours per week and rates her opportunities for advancement to be at
30, what would you expect her job satisfaction score to be?
supervisor is 40, finds the quality of the work environment to be scored at 75,
works 60 hours per week and rates her opportunities for advancement to be at
30, what would you expect her job satisfaction score to be?
Question 3
Investment analysts generally believe the interest rate on bonds is inversely related to
the prime interest rate for loans; that is, bonds perform well when lending
rates are down and perform poorly when interest rates are up. Can the bond rate
be predicted by the prime interest rate?
the prime interest rate for loans; that is, bonds perform well when lending
rates are down and perform poorly when interest rates are up. Can the bond rate
be predicted by the prime interest rate?
Use the following data to construct a scatter graph and then fit a regression
line to the data. Report the regression formula and the r-squared value
from the chart (right click on the line, select “Add Trendline” and select
options to show these metrics).
line to the data. Report the regression formula and the r-squared value
from the chart (right click on the line, select “Add Trendline” and select
options to show these metrics).
Bond Rate Prime Interest Rate
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