Given the following sample observations, draw a scatter diagram on a separate piece of paper.
X: | −7 | −17 | 13 | 4 | 16 |
Y: | 57 | 247 | 157 | 2 | 343 |
Compute the correlation coefficient. (Round your answer to 3 decimal places.)
Does the relationship between the variables appear to be linear?
Yes
No
Try squaring the x variable and then determine the correlation coefficient. (Round your answer to 3 decimal places.)
The statistical software output for this problem is :
Correlation coefficient = 0.195
No
After squaring the x variable and then determine the correlation coefficient.
Correlation coefficient = 0.0.937
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