Statistics, option 3

Target 9.
The following data on the age structure of the production of equipment for the industry:
Age, Specific weight of the equipment in the group%
5 8.0
6-10 27.4
11-15 23.2
16-20 15.9
Over 20 25.5
Total 100.0
Define:
1) The average age of the production equipment;
2) the modal and the median age of the production equipment;
3) applying a coefficient of variation, specify conclusion about the possibility of using indicators calculated as the average.

Target 11
The available data on the average wage in January 2002 by economic sectors in the region:
Branches of the economy average salary, ths. Rub. The average number of employees,
thous. people. Coefficient of variation,%
Management 4.5 95.0 34
Credit, finance, insurance 24 8.5 18.0
Define:
1) The average wage of workers in two industries;
2) Wage Dispersion:
a) the average of the industry;
b) cross-sectoral;
c) general;
3) specify the findings.

Target 13
The available data on the variation of the price of meat products in the markets of Russian cities during the month:
City Number of outlets The volume of sales, thous. Tons. The average price per kg., Rubles. Variance
Moscow 200 50.3 95 339.3
Saint Petersburg 50 45.3 80 307.7
Ekaterinburg 30 9.7 65 325.0
Nizhny Novgorod 45 10.4 70 318.2

Define:
1) the average price of meat products in the markets surveyed cities;
2) the proportion of variation in prices under the influence of the territorial factor;
3) with a probability of 0,95 (t = l, 96), the average price of meat products in the markets of all Russian cities.

Task 24
In the Russian Federation there are the following data:
Indicator Years
Average monthly salary, ths. Rub. 1997 1998 1999 2000 2001
The prices of the respective year 0,950 1,052 1,523 1,810 2,205
In 1997 prices 0.950 0.820 0.630 0.750 1.220

1) using analytical smoothing method, build the model of the average monthly wage in the prices of 1997 .;
2) assess the adequacy of the constructed model and allow evaluation of the predictive index of average monthly wages in 2002 .;
3) specify the findings.

Task 34.
In Russia there is data on the composition of the resident population as of January 1 of the year:
Indicator Years
1998 1999 2000
The entire population, thousand. People. 146740 146328 145559
including
below working age 31667 30335 29053
working age 84786 85548 86330
working age 30587 30445 30176
Identify and analyze the dynamics:
1) The rates of overall demographic burden the working age population;
2) the performance of the pension loads and loads of replacement;
3) Check the relation between the indicators of demographic load;
draw conclusions.