13-mba-r5-statistics For Management

R5

Code No: R5-13-/MBA MBA-I Semester Supplementary Examinations, July/Aug 2008. STATISTICS FOR MANAGEMENT Time: 3hours

1.a) b)

Max. Marks: 60

Answer any FIVE questions All questions carry equal marks --Discuss the role of statistics in Government and business. Explain the uses and limitations of statistics.

2.a)

What is classification? Explain different types of classification and uses of tabulation. b) What is meant by primary data and secondary data? What are the qualities of a good questionnaire.

3.a) Define various measures of central tendency. b) Calculate mean and variance for the following data Class 0-10 10-20 20-30 30-40 40-50 Interval Frequency 7 18 40 63 40

50-60 30

4.a) What is meant by time series? Discuss its components. b) Explain the method of determining trend by moving averages with odd and even periods. 5.a) Explain the concept of correlation and Regression. Draw the difference between them. b) Calculate coefficient of correlation and comment on the result for the following data. X Y

16 23

12 22

18 24

4 17

3 19

10 20

5 18

12 21

6.a) Define index numbers? Explain time and factor reversal tests. b) Explain fisher’s Index number, why it is called ideal index number? Give reasons. 7.a) Define null and alternative hypothesis. parametric and non-parametric tests. b) Explain ANUVs of two way classification.

Distinguish

between

8.a) Explain different types of diagrams for representing statistical data. b) Represent the following data by means of Histogram. Works in 10-15 hrs Frequency 7

15-20

20-25

25-30

30-35

35-40

40-50

19

27

15

12

12

8

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