The Following Data Represent Scores on a 15 Point Aptitude

question 78

Essay

The following data represent scores on a 15 point aptitude test: 8, 10, 15, 12, 14, and 13.
a. Complete the sample mean for the original data.
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Subtract 5 from every observation and complete the sample mean for the new data.
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b. Complete the sample variance for the original data.
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Subtract 5 from every observation and complete the sample variance for the new data.
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c. What effect, if any, does subtracting 5 from every observation have on the sample mean and sample variance?
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Definitions:

Multiple Step Income Statement

An income statement that separates operational revenues and expenses from non-operational ones to calculate net income.

Adjusted Trial Balance

A list of all accounts and their balances after adjusting entries have been made, used to prepare financial statements.

Gross Profit

The difference between revenue and the cost of goods sold, indicating the efficiency of core operations before overhead costs.

Gross Profit Percentage

A financial metric that shows the portion of revenue that exceeds the cost of goods sold, expressed as a percentage.