Subtract. --7.1 - 12.9

question 212

Multiple Choice

Subtract.
--7.1 - 12.9

• A) 20
• B) 5.8
• C) -20
• D) -5.8

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Definitions:

Standard Deviation

A measure of the amount of variation or dispersion in a set of values, indicating how much the values deviate from the mean of the set.

Mean

The average of a set of numerical values, calculated by dividing the sum of the values by the number of values.

Normal Distribution

A bell-shaped frequency distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean.

Standard Deviation

A statistic that measures the dispersion or spread of a set of data points relative to its mean.