In any production process in which one or more workers are engaged in a variety of tasks, the total time spent in production varies as a function of the size of the workpool and the level of output of the various activities. In a large metropolitan department store, it is believed that the number of man-hours worked (
y) per day by the clerical staff depends on the number of pieces of mail processed per day (
x1) and the number of checks cashed per day (
x2). Data collected for
n = 20 working days were used to fit the model:
E(
y) =
β0 +
β1x1 +
β2x2A partial printout for the analysis follows:
___________________________________________________________________________
| | ROOT MSE | 16.34503 | R-SQUARE | 0.6095 |
DEP MEAN
93.92682
ADJ R-SQ
0.5636
C.V.
17.40188
Test to determine if the model is adequate for predicting the number of man-hours worked. Use
α = .025.
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