Discuss the below:
Compute the range, the standard deviation, and the variance.
Q: 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