Unformatted text preview: ich village is the variation in income greater)
44. From the following table calculate the Karl – Pearson’ s
coefficient of skewness
150
200
250
300
350
400
450
Daily
Wages(in
Rs):
No. of
3
25
19
16
4
5
6
People
189 45. Compute Bowley’ s coefficient of skewness from the
following data:
Size
57
810 11141713
16
19
Frequency 14
24
38
20
4
46. Using moments calculate β1 and β2 from the following
data:
Daily
7090110 130 150wages
90
110
130
150
170
No. of 8
11
18
9
4
workers
IV. Suggested Activity
Select any two groups of any size from your class calculate mean,
S.D and C.V for statistics marks. Find which group is more
consistent.
Answers
I. 1. (c)
2. (c)
6. (c)
7. (d)
II.
11. units
12. Q.D
16. 15
17. Variance
20. Mesokurtic 3. (a)
8. (d) 4. (b)
9. (c) 13. M.D
18. 0.1 14. 6 15. Zero
19. zero III.
36. Q.D = 1.5
39. M.D = 7.35 37. Q.D = 5.2085
40. S.D = 1.67 42. S.D of A = 67.06
S.D of B = 68.8
43. C.V.A = 5.71% ; C.V.B = 4.84 %
44. Sk = 0.88
45. Sk = – 0.13
46.β1 = 0.006 β2 = 2.305 190 38. M.D = 1.5
41. S.D = 12.3 5. (b)
10.(b) 8. CORRELATION
Introduction:
The term correlation is used by a common man without
knowing that he is making use of the term correlation. For example
when parents advice their children to work hard so that they may
get good marks, they are correlating good marks with hard work.
The study related to the characteristics of only variable such
as height, weight, ages, marks, wages, etc., is known as univariate
analysis. The statistical Analysis related to the study of the
relationship between two variables is known as BiVariate
Analysis. Some times the variables may be interrelated. In health
sciences we study the relationship between blood pressure and age,
consumption level of some nutrient and weight gain, total income
and medical expenditure, etc., The nature and strength of
relationship may be examined by correlation and Regression
analysis.
Thus Correlation refers to the relationship of two variables
or more. (eg) relation betwee...
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This note was uploaded on 01/18/2014 for the course BUS 100 taught by Professor Moshiri during the Winter '08 term at UC Riverside.
 Winter '08
 Moshiri
 Business

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