Statistics, option 3

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Uploaded: 28.04.2013
Content: 30428235341713.zip (20,03 kB)

Description

Summary and grouping of statistical data

Task
There is evidence for five groups of sellers bookstore:
Work experience, years the number of sellers, people.
Prior to March 4
4-6 8
6-8 10
8-10 6
More than April 10
Define:
A) The average length of service for the entire set of sellers;
B) performance variation:
- The scope of variation;
- The average linear deviation;
- The mean square deviation (dispersion);
- Standard deviation;
- Coefficient of variation.

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