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Calculate the range, the standard deviation, and the variance.

Compute the range, the standard deviation, and the variance.

93) Each person who applies for an assembly job at Carolina Furniture Inc is given a mechanical aptitude test. One part of the test involves assembling a dresser based on numbered instructions. A sample of the lengths of time it took 42 persons to assemble the dresser was organized into the following frequency distribution.

Length of Time Frequency
(minutes)
2 up to 4 4
4 up to 6 8
6 up to 8 14
8 up to 10 9
10 up to 12 5
12 up to 14 2

Solution Preview

Range = Highest Data Value - Lowest Data Value

= 14 - 2 = 12

Standard Deviation ...

Solution Summary

The solution includes a word file and an excel file that show a step by step calculations of the range, variance and standard deviation.

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