In addition to job-seeking activity, the age of a white-collar worker may be related to his or her length of unemployment. Suppose then that age (Z) is added to the two variables in Problem 15.

Data From Problem 15

An economist is interested in studying the relationship between length of unemployment  and job-seeking activity among white-collar workers. He interviews a sample of 12 unemployed  accountants as to the number of weeks they have been unemployed (X) and seeking  a job during the past year (Y). Compute a Pearson’s correlation coefficient for these data  and determine whether the correlation is significant.

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Accountant A AB C D E F G H I J K L X Y 2 7 5 12 1 10 8 65234 1697SINUNAW.00 8 3 4 2 5 2 5 4