A rock band is trying to predict the number of CDs they will sell per week based on the number of hits they get on their web site which has a sample clip on it. They collect data from 13 previous weeks and entered it into a statistical computer package.
For this regression study, the
SSTO = 1,017,827 and the
SSE = 18,1567.7. What is the
value of the correlation between
number of hits on the web site
and number of CDs sold?
1.17.8
2.82.2
3.90.6
4.42.2
Question 2A rock band is trying to predict the number of CDs they will sell per week based on the number of hits they get on their web site which has a sample clip on it. They collect data from 13 previous weeks and entered it into a statistical computer package.
The least squares regression
equation is given by:
= -828 + 8.2x .
What do you predict the CD
sales to be for a week in which
the web site has 215 hits?
1.1,158
2.2,591
3.935
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