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1.The primary data on the income (Ls) of the company employees are given: 240, 150, 250, 200, 200, 350, 250, 250, 300, 200, 250, 400,

1.The primary data on the income (Ls) of the company employees are given:

240, 150, 250, 200, 200, 350, 250, 250, 300, 200, 250, 400, 400, 500, 400, 500, 450, 400, 350, 200, 120, 130, 140, 210, 120, 700, 800, 700, 400, 500

Form a variation series (simple and frequency). Calculate the mean, variance. Find mode and median. Convert variation series to interval. The calculation of the width of the interval is performed according to the Sturges formula. Find mode and median.

2.In order to study the quality of parts, a batch of 100 parts was checked at the enterprise. The results are presented in the following table:

Groups of parts by weight, g

40-50

50-60

60-70

70-80

80-90

90-100

100-110

110-120

Total

Number of parts

2

4

11

19

21

25

10

8

100

Determine the mean, variance, mode, median, 1st and 3rd quartiles, coefficient of variation, plot a histogram, find asymmetry and kurtosis. Show the calculated indicators in the figure.

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