Instruction 13 -Referring to Instruction 13

question 213

Multiple Choice

Instruction 13.1
A manager of a product sales group believes the number of sales made by an employee (Y) depends on how many years that employee has been with the company (X₁) and how he/she scored on a business aptitude test (X₂) . A random sample of 8 employees provides the following:
$$\begin{array} { | l | l | l | l | } \hline \text { Employee } & Y & X 1 & X 2 \\\hline 1 & 100 & 10 & 7 \\\hline 2 & 90 & 3 & 10 \\\hline 3 & 80 & 8 & 9 \\\hline 4 & 70 & 5 & 4 \\\hline 5 & 60 & 5 & 8 \\\hline 6 & 50 & 7 & 5 \\\hline 7 & 40 & 1 & 4 \\\hline 8 & 30 & 1 & 1 \\\hline\end{array}$$
-Referring to Instruction 13.1,for these data,what is the estimated coefficient for the variable representing years an employee has been with the company,b₁?

• A) 3.103
• B) 4.698
• C) 21.293
• D) 0.998

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Definitions:

Price Variance

A measurement of the difference between the actual cost of a good or service and its expected cost.

Quantity Variance

The difference between the expected and actual quantities used or produced in a process.

Total Cost Variance

The difference between the actual cost and the standard cost of an operation, process, or product.

Direct Materials Price

The cost of raw materials and components required to produce a finished product.