SCENARIO 12-11
a Computer Software Developer Would Like to Use

question 47

Multiple Choice

SCENARIO 12-11
A computer software developer would like to use the number of downloads (in thousands) for the trial version of his new shareware to predict the amount of revenue (in thousands of dollars) he can make on the full version of the new shareware.Following is the output from a simple linear regression
along with the residual plot and normal probability plot obtained from a data set of 30 different sharewares that he has developed:
$\begin{array}{lr}{\text { Regression Statistics }} \\\hline \text { Multiple R } & 0.8691 \\\hline \text { R Square } & 0.7554 \\\hline \text { Adjusted R Square } & 0.7467 \\\hline \text { Standard Error } & 44.4765 \\\hline \text { Observations } & 30.0000 \\\hline\end{array}$

$\text { ANOVA }$
$\begin{array}{|l|r|r|r|r|r|}\hline &\text { df } & \text { SS } & \text { MS } & F & \text { Significance } F \\ \hline \text { Regression } & 1 & 171062.9193 & 171062.9193 & 86.4759 & 0.0000 \\\hline \text { Residual } & 28 & 55388.4309 & 1978.1582 & & \\\hline \text { Total } & 29 & 226451.3503 & & \\\hline\end{array}$





Simple Linear Regression 12-41
-Referring to Scenario 12-11, which of the following is the correct interpretation for the coefficient of determination?

• A)74.67% of the variation in revenue can be explained by the variation in the number of downloads.
• B)75.54% of the variation in revenue can be explained by the variation in the number of downloads.
• C)74.67% of the variation in the number of downloads can be explained by the variation in revenue.
• D)75.54% of the variation in the number of downloads can be explained by the variation in revenue.

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Definitions:

Salvage Value

The forecasted selling price for an asset once it reaches the end of its operational life.

Depreciation Expense

The allocated expense of a tangible asset over its useful life, representing the asset's reduction in value due to use and wear and tear.

Accumulated Depreciation

The total amount of depreciation expense that has been recorded against a company's assets over time.

Units-Of-Activity

A depreciation method that allocates the cost of an asset over its useful life based on the number of units it produces or the hours it operates.