In the Formula for Calculating the Standard Deviation, the Differences

question 86

Multiple Choice

In the formula for calculating the standard deviation, the differences between each observation and the mean is squared. If we did not square these differences, the standard deviation would:

• A) be too small to be of any usefulness
• B) close to zero
• C) not be normally distributed
• D) not be interpreted by z values
• E) statistically insignificant

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Definitions:

Unknown Parameter

A value within a statistical model that is not observed directly but is estimated from the data.

P-Value

The possibility of observing test findings that are as extreme or more so than the actual findings, under the condition that the null hypothesis is valid.

Average Student

A middle or typical student, usually considered in terms of academic achievement, not necessarily referring to the mean score or mean performance.

Final Comprehensive Exam

A cumulative test covering material from an entire course or series of courses, typically given at the end of an academic term or program.