Variant_66_10 Statistics

Task 3
During the reporting period, there are the following data on the electrical equipment of labor and production of products by factory workers:
Worker,
no. p / p electric Power of labor per worker, kW / h output per worker, million rubles.
1 6.7 7.5
25,07,0
36,08,4
410,012,0
58,39,5
66,38,0
76,98,5
82,04,5
93,44,4
107,09,3
119,412,4
128,78,1
135,37,0
144,16,5
157,89,0
164,66,1
175,66,8
187,98,7
193,96,9
205,87,9
To study the relationship between the electric power of labor and production, group workers by electric power of labor, forming four groups with equal intervals.
For each group and the total population count:
1) the number of workers;
2) electric equipment of workers ´ labor-total and average per employee;
3) production of total and average output per worker.
Present the results in the development and group tables. Give an analysis of the indicators and draw conclusions.
Task 22
As a result of a 10% mechanical sample survey of the company´s employees, data on the length of service was obtained:
Groups of employees by work experience, years Number of employees
Up to 5 5-10 10-15
15-20
20 or more 3
8 20 12 7
Total 50
Define:
1) the average work experience of the surveyed employees (sample average);
2) variance and average square deviation of work experience;
3) the coefficient of variation;
4) with a probability of 0.954, the maximum sampling error and the interval in which the average length of service of all employees of the enterprise is located.
Conclude.

Task 36
Data on the number of students in secondary special educational institutions of the region (at the beginning of the academic year):
Academic year Number of students, thousand people
2006/200750,7
2007/200847,0
2008/200942,3
2009/201039,5
2010/201138,0
Define:
1) type of dynamic series;
2) the average level of the dynamic range;
3) absolute increments, growth and growth rates chain and basic, the absolute content of 1% growth;
4) average absolute growth, average growth rate and growth of dynamic series levels.
Present the calculation results in the table. Draw a dynamic series on the graph. Conclude.
Task 49
Data on product sales and prices were as follows:
Name
products Sold at private enterprises, kg Price per 1 kg, p.,
at enterprises municipal and private
A 1520 16.0 18.0
B 820 5.8 5.2
In 5000 12.0 14.0
Define:
1) individual and General indices of the ratio of prices of private and municipal forms of trade;
2) the amount of overpayments (savings) of the population as a result of purchasing products from private enterprises.
Conclude.
Task 68
Data for a trading company for two periods:
Indicators Basic
Reporting period
period
Turnover, thousand rubles 2668.0 4405.1
Price index of the reporting period compared to the base period
- 1.15
Average payroll number of
of employees, people
80
75
Define:
1) the average output of one employee for each period in current and comparable prices;
2) average output indices in current and comparable prices;
3) absolute increase in turnover – total, including due to changes in prices, average output and the number of employees.
Conclude.
Task 84
There are the following data on the turnover of trade organizations in the region for the reporting period (thousand rubles):
Sellers Buyers
municipal enterprises of private enterprises of the organizations of consumer cooperation of the population
Wholesale companies (databases, intermediary firms, etc.)
1350
978
1095
574
Municipal enterprise
370
210
250
1040
Private industry
235
348
190
907
Consumer cooperation organizations

–
190
–
1332
Calculate the totals for sellers and buyers and determine for the area:
1) wholesale and retail trade turnover, gross;
2) indicator of the level of commodity movement;
3) changes in inventory at the end of the reporting period for consumer cooperation org