1. Given the following set of paired data, calculate the correlation coefficient. Round your final answer to two decimal places.
|
x
|
6
|
9
|
12
|
15
|
23
|
|
y
|
11
|
5
|
1
|
6
|
3
|
2. Is there a correlation between x and y in Problem 1? Use Table A-5 to help you to explain your answer. Don't just say yes or no!
3. Find the equation of the regression line for the data in Problem 1. Round your slope and y-intercept to three decimal places.
4. Use your regression line equation to predict the value of y for x = 13. Round your answer to two decimal places.
5. Does it make sense to use the regression line to make predictions for the data in Problem #1? Explain.