1. 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 about the number of weeks they have been unemployed (X) and the number of weeks they have been seeking a job during the past year (Y). In addition to job-seeking activity, the researcher collected the age of all respondents (Z). Weeks Weeks Accountant Unemp. Seeking Age 8 30 3 42 4 36 47 29 56 D W N U OOOHNUNN 52 HVOALANUN 40 27 31 36 33