Compute the Linear Correlation Coefficient Between the Two Variables and Determine

question 9

Multiple Choice

Compute the linear correlation coefficient between the two variables and determine whether a linear relation exists.
-The table shows the number of days off last year and the earnings for the year (in thousands of dollars) for nine randomly selected insurance salesmen.

• A) \(\mathrm { r } = - 0.991\); linear relation exists
• B) \(\mathrm { r } = - 0.991\); no linear relation exists
• C) \(\mathrm { r } = - 0.899\); linear relation exists
• D) \(\mathrm { r } = - 0.899\); no linear relation exists

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