# Verification work number 2 on statistics, version 28

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Uploaded: 21.05.2013
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# Description

Verification work number 2
The control job number 1
1. Using the results of calculations performed in the control operation №1, setting the number 2, and assuming that the data obtained by the self-random 10 per cent sampling without replacement sampling, to determine:
a) limits for which a confidence level of 0.954 will not mean characteristic value calculated by the general population;
b) how to change the volume of the sample to reduce the margin of error for the mean value of 50%.
2. Using the results of calculations performed in the control operation №1, job number 2, and assuming that the data obtained by repeated selection, to determine:
a) limits beyond which the population will not share value of companies in which the individual characteristic value exceeds mode (confidence level set at its own discretion);
b) how to change the volume of the sample to reduce the margin of error of 20% proportion.

Control task number 2
Refer to the table number 1 to select a dynamic number that corresponds to your version, for which:
1. Calculate:
a) quarterly average level of a number of speakers;
b) chain and basic performance indicators: absolute growth, growth rate, growth rate;
c) the average absolute growth, the average growth rate, the average rate of growth.
2. Perform a number of speakers trehkvartalnoy smoothing moving average.
3. Show actual and aligned rows graphically.
4. To draw conclusions.
Table 1
MAIN INDICATORS OF INDUSTRIAL FIRMS FOR THE PERIOD FROM 2002 TO 2005
(For comparable evaluation)
N observations Year Quarter Number of PPP, people., At the end of the quarter
A B 3
August 2002 4646
September 2003 1693
10 2718
11 3363
12 4639
13 2004 1708
14 2614
15 3348
16 4636
17 2005 1825
18 2622
19 3514

11 pages

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