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:
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.
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
13 2004 1708
17 2005 1825