Statistics (rated operation 1)

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In any "source" get data characterizing any collection. It may be firms, enterprises, banks, regions, etc. (A reference to the "source" must be specified in the work). Choose from this set of 20 units and four features that characterize them. Data should be presented in the table.
On the basis of these data, do the following:
1. Make a group (with equal intervals) 20edinits on any one feature.
The number of groups define their own, but not bolee5-minute.
Each selected group characterize accumulated figures move itog.Rasschitayte overall performance in relative terms.
Results are presented in the summary table of the group.
2. Build the analytical group, characterizing the dependence of selected indicators of the grouping variable.
Results are presented in tabular form and analyze them.
3. In the original data, and based on the group built in paragraph 1, draw a series of distribution.
• Determine the average value of the grouping variable (as "simple" arithmetic mean and weighted sr.arifmeticheskuyu interval of variation in ranks). Compare the results.
• Determine the median and modal znacheniegrupprovochnogo feature. Identify other structural medium. Draw conclusions.
• Determine the performance variation characteristic. Draw conclusions.

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