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

question 29

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 assumptions appears to have been violated?

• A)Normality of error
• B)Homoscedasticity
• C)Independence of errors
• D)None of the above

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Definitions:

Lookback Period

The lookback period is a specified duration during which past financial activities are reviewed for legal, tax, or regulatory purposes.

Withholding Allowance

An exemption that reduces how much income tax an employer deducts from an employee's paycheck.

Federal Withholding Tax

Taxes automatically deducted from an employee's paycheck by the employer and paid to the federal government.

FICA Taxes

Federal Insurance Contributions Act taxes, which fund Social Security and Medicare, required to be paid by both employees and employers.