# Statistics. Practical work.

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# Description

Practical work

1. The number of the RSFSR population census in 1959 was 117.2 million people, including urban population - 61.1 million people, the rural population - 56.1 million people. According to the 1970 census, the total population of the republic grew to 129.9 million people, of which the urban population accounted for -. 80.6 million people and rural -. 49.3 million people.. . 94.9 million people, and rural - -. 42.5 million people. According to the 1979 total 137.4 million people, including the urban population has been registered. . 108 million people, and rural - -. 39 million people. According to the 1989, a total of 147 million people, of which the urban population has been registered. According to the 2002 population census, the total population of Russia amounted to 145.1 million people, including with the urban population was 106.4 million people, rural -.. 38.7 million people.. Present the data in the form of statistical tables, easy to read. Bring in the table relative indicators of population structure.
Analyze the resulting table.
2. Car from the base to the store goes at a speed of 40 km / h, and from the store to the base - at a speed of 60 km / h. What is the average speed of the vehicle in flight (to the store and back)?
3. According to the development of production workers of the enterprise (see. Table) the sum of the average production worker for the production of one shift.
Table
Development of production companies working for change
The Working Group on the number of products, items. The number of workers people.
3 - May 10
5 - 30 July
7 - 9 40
9 - 15 November
11 -13 5
TOTAL 100

4. According to the data on the distribution of enterprises in terms of turnover in the region (. See table), determine the average volume of trade turnover; mode and median. For all calculations, draw conclusions. These calculations take the form of a table.
Table
The turnover of enterprises in the region
Group companies in terms of turnover, mln. number of enterprises
400 9
400 - 500 12
500 - 600 8
600 - 700 9
More than 2 700
TOTAL 40

5. When checking the quality control of baked goods held a 5% sampling batch of sliced loaves of white flour. In this case of 100 loaves 90 pieces selected in the sample. comply with the standard. The average weight of a loaf in the sample was 500.5 g with a standard deviation of 15.4 On the basis of the sample data set possible values for the proportion of standard products, and the average weight of one product in the whole Party.
6. According to the data referred to in paragraphs. 5.4 Benefits approx. 31, calculate the optimal sample size, with a probability of 0.95 to limit the error does not exceed 10% of the average cereal yield.
7. The volume of commodity production car repair plant (in current prices) was as follows: April - 12,000 thousand rubles in May - 14400 thousand rubles, June - 24000 thousand rubles...... Selling prices of plant products decreased on average in May, compared with April by 0.6%, and in June increased by 5.0% compared with May. Determine the change in volume production.
8. According to the company for two months, we have the following data on the output and expenditure on it (see. Table).

Table
The output of the enterprise and the cost of its production
Indicator January February
Rolled sheet, th. Tonnes 45 50
The total amount of costs to production, ths. Rub. 65835 73500
Determine the absolute change in total enterprise costs due to changes in output and its cost.

9. The consumption of leather footwear in the country characterized by the data shown in the table:
Table
The consumption of leather footwear in Russia
Year 1913 1950 1960 1965 1970 1975
Per capita consumption of leather footwear population pairs per year 0.4 1.1 1.9 2.4 3.0 3.2

Analyze footwear consumption by calculating the relative values of the speakers.

10. The following data on the administration of goods by rail by public transport (s

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