DATA SETS FOR
CORRELATION/REGRESSION
1. A manager wishes to find out whether there is a relationship between the number of radio ads aired per
week and the amount of sales (in thousands of dollars) of a product.
Number of Ads. x 2 5 8 8 10 12
Sales y 2 4 7 6 9 10
2. Managers rate employees according to job performance and attitude. The results for several employees
randomly selected are given below.
Performance 59 63 65 69 58 77 76 69 70 64
Attitude 72 67 78 82 75 87 92 83 87 78
3. The living areas (in square feet) of 8 randomly selected homes in Knox County are listed along with the
annual tax amount.
Living Area 1500 3800 2300 1600 1600 1300 2000 2400
Taxes $1900 $2400 $1400 $1400 $1500 $1800 $2400 $4000