bus-stat-book1

Using moments calculate 1 and 2 from the following

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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 5-7 8-10 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 Bi-Variate Analysis. Some times the variables may be inter-related. 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. (e-g) 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.

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