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Describe a Work Sheet and Explain Why It Is Useful

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Describe a work sheet and explain why it is useful.


Definitions:

Variance

A measure of how much values in a data set differ from the mean, calculated as the average of the squared differences from the mean.

Standard Deviation

An indicator of the extent of variability or spread within a data set, showing how far from the average the values range.

Deviations

Differences from a central value, such as the mean or median, indicative of variability within a data set.

Mean

The arithmetic average of a set of numbers, calculated by adding all the numbers and dividing by the count of numbers.

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