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Exhibit 15-8
The following estimated regression model was developed relating yearly income (Y in $1,000s) of 30 individuals with their age (X1) and their gender (X2) (0 if male and 1 if female) . Also provided are SST = 1,200 and SSE = 384.
-Refer to Exhibit 15-8. If we want to test for the significance of the model, the critical value of F at 95% confidence is
Raw Materials Quantity Variance
The difference between the expected amount of raw materials required for production and the actual amount used, evaluated in terms of cost.
Labor Rate Variance
The difference between the actual cost of direct labor and the expected (or standard) cost, based on the standard hours worked and standard labor rate.
Variable Overhead Rate Variance
The difference between the actual variable overhead incurred and the expected variable overhead based on standard cost.
Materials Price Variance
The difference between the actual cost of raw materials and the standard or expected cost, multiplied by the quantity of materials purchased.
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