7 tasks on Statistics (a / p №1 and №2)

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Task №1.
With bar graph Draw data on the population of one million people from the regions of Russia.
Years Population
Total Of which:
Urban Rural
1993 34.9 24.9 10.0
1994 34.5 24.4 10.1
1995 35.5 25.1 10.4
1996 25.6 18.3 7.3
1997 27.8 19.8 8.0
1998 24.5 17.8 6.7

Problem №2.
The available data on the production of paper in Russia:
1992 1993 1994 1995
Made of paper, mln. T 3603 2882 2215 2771
Calculate the relative performance of the dynamics of variable and constant base of comparison. Check out their relationship.

Problem №3.
The distribution of workers by wage category of one of the shops of the plant as of 1 January 1999 was characterized by the following data:
The discharge rate scale .....! 23456
The number of workers ............... 12 May 25 30 45 36
Determine the average wage group working shop.
Specify what type of medium used in the solution of this problem, and to conclude that the level of workers' skills.

Problem №4.
The available data on the implementation of the plan of production engineering industry enterprises 5 May of the reporting year:
Enterprises actual output (thous. Rub.) The percentage of the plan
AO PZ-34110106
JSC "Darus" 60102
PP-AS 6,250,105
JSC "Dormash" 160 98
JSC "Rostselmash" 300110
Calculate the percentage of the plan by an average of 5 companies.

Verification work on discipline №2 "Statistics".
Task №1.
The available data on the performance of the group of 20 students on the theory of statistics in the winter session of 2000. 5,3,5,5,5,4,5,2,5,3,4,2,5,3,2,5,4,4,5,4. Build:
a) The number of students on the distribution of scores obtained in the assessment session;
b) the number of the distribution of students by level of performance by highlighting it in two groups of students: underachievers (2 points), achievers (3 points or more);
c) specify what type of distribution series (variational or attributive) is one of the two series.

Problem №2.
Among the 1,000 households surveyed selectively region in terms of peace of income (a 2% sample, mechanical) turned 300 low-income families. Required to determine the probability of 0.997 share of low-income families throughout the region.

Problem №3.
To determine the average age of the students of the Faculty of 1200 is necessary to conduct a sample survey by random sampling without replacement selection. Previously it found that the standard deviation of the age of students is 10 years. How many students have to examine, with a probability of 0.954 to the average sampling error does not exceed 3 years.

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