A particular professor has noticed that the number of people, P, who complain about his attitude is dependent on the number of cups of coffee, n, he drinks. From eight days of tracking he compiled the following data: People (P) 11 11 9 8 7 6 6 5 Cups of coffee (n) 1 1 2 2 3 4 5 5 Unless otherwise stated, you can round values to two decimal places. a) Using regression to find a linear equation for P(n) P(n)P(n) = b) Find the correlation coefficient rr = c) Does the correlation coefficient indicate a strong linear trend, a weak linear trend, or no linear trend? strong linear trend weak linear trend no linear trend
A particular professor has noticed that the number of people, P, who complain about his attitude is dependent on the number of cups of coffee, n, he drinks. From eight days of tracking he compiled the following data: People (P) 11 11 9 8 7 6 6 5 Cups of coffee (n) 1 1 2 2 3 4 5 5 Unless otherwise stated, you can round values to two decimal places. a) Using regression to find a linear equation for P(n) P(n)P(n) = b) Find the correlation coefficient rr = c) Does the correlation coefficient indicate a strong linear trend, a weak linear trend, or no linear trend? strong linear trend weak linear trend no linear trend
Chapter3: Polynomial Functions
Section: Chapter Questions
Problem 18T
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Question
A particular professor has noticed that the number of people, P, who complain about his attitude is dependent on the number of cups of coffee, n, he drinks. From eight days of tracking he compiled the following data:
People (P) | 11 | 11 | 9 | 8 | 7 | 6 | 6 | 5 |
---|---|---|---|---|---|---|---|---|
Cups of coffee (n) | 1 | 1 | 2 | 2 | 3 | 4 | 5 | 5 |
Unless otherwise stated, you can round values to two decimal places.
a) Using regression to find a linear equation for P(n)
P(n)P(n) =
b) Find the
rr =
c) Does the correlation coefficient indicate a strong linear trend, a weak linear trend, or no linear trend?
- strong linear trend
- weak linear trend
- no linear trend
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