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#### Applied Statistics Two Marks Quesions

12th Standard EM

Reg.No. :
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Time : 00:45:00 Hrs
Total Marks : 30
15 x 2 = 30
1. Explain cyclic variations.

3. Define seasonal index.

4. State the two normal equations used in fitting a straight line.

5. State the different methods of measuring trend.

6. Find the trend of production by the method of a five-yearly period of moving average for the following data:

 Year 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 Production(‘000) 126 123 117 128 125 124 130 114 122 129 118 123
7. The following table gives the number of small-scale units registered with the Directorate of Industries between 1985 and 1991. Show the growth on a trend line by the free hand method.

 Years 1985 1986 1987 1988 1989 1990 1991 1992 No. of units (in‘000) 10 22 36 62 55 40 34 50
8. The following table shows the number of salesmen working for a certain concern:

 Year 1992 1993 1994 1995 1996 No. of salesmen 46 48 42 56 52

Use the method of least squares to fit a straight line and estimate the number of salesmen in 1997.

9. Define Index Number

10. Write note on Fisher’s price index number

11. State the test of adequacy of index number.

12. Define Time Reversal Test.

13. Explain Factor Reversal Test.

14. Define true value ratio.

15. Discuss about Cost of Living Index Number.