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Correlation coefficient r

For the following data calculate the correlation coefficient r and make a conclusion about the type of correlation.

The number of hours 6 students watched T.V. during the weekend and the scores of each student who took a test the following Monday.

Hours spent watching TV, X 0 1 2 3 3 5
Test Scores, Y 95 88 83 72 91 68

a) The correlation coefficient r is ????? (round to three decimal places)

b) Which of the following best describes the type of correlation that exists between number of hours spent watching TV and test scores? (choose one)

No linear correlation
Strong positive linear correlation
Weak negative linear correlation
Strong negative linear correlation

Solution Preview

For the following data calculate the correlation coefficient r and make a conclusion about the type of correlation.

The number of hours 6 students watched T.V. during the weekend and the scores of each student who took a test the following Monday.

Hours spent watching TV, X 0 1 2 3 3 5
Test ...

Solution Summary

The solution examines the correlation coefficient of r. The type of correlation is given.

$2.19