column indicates the number of client contacts last month, and
column Y shows the value of sales last month for each client sampled
a) Determine Regression equation
b) Determine Estimated sales if 40 contacts are made
EX.18) We are studying mutual bond funds for the purpose of
investing in several funds. For this particular study, we want to focus
on the assets of a fund and its five-year performance. The question is:
can the five-year rate of return be estimated based on the assets of the
fund? Nine mutual funds were selected at random and their assets and
rates of return are shown below.
b-1. compute the coefficient of correlation.
b-2. Compute the coefficient of determination
c) Give a description of the degree of association between the
variables
d) Determine the regression equation. Use assets as the independent
variable.
e) For a fund with $400.0 million in sales, determine the five-year
rate of return.
EX.30) On the first statistics exam, the coefficient of determination
between the hours studied and the grade earned was 80%. The
standard error of estimate was 10. There were 20 students in the class.
Develop an ANOVA table for the regression analysis of hours studied
as a predictor of the grade earned on the first statistics exam.
Chapter 16: