bus-stat-book1

Weights in kg height in cms 150 155 155 160 160 165

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Unformatted text preview: 16 50-59 1-2----1-4 60-69 -----1-1-2 41. Calculate the coefficient of correlation and comment upon your result. Age of wives Age of Husband 15-25 25-35 35-45 45-55 55-65 65-75 Total 15-25 1 2 3 25-35 1 12 4 17 35-45 1 10 3 14 45-55 1 6 2 9 214 55-65 1 4 1 6 65-75 2 2 4 Total 2 15 15 10 8 3 53 42. The following table gives class frequency distribution of 45 clerks in a business office according to age and pay. Find correlation between age and pay if any. Pay Age 20-30 30-40 40-50 50-60 60-70 Total 60-70 70-80 4 3 2 5 1 2 1 7 11 80-90 1 2 3 3 1 10 90-100 1 2 5 1 9 100-110 1 2 5 8 Total 8 10 9 11 7 45 43. Find the correlation coefficient between two subjects marks scored by 60 candidates. Marks in Statistics Marks in 5-15 15-25 25-35 35-45 Total economics 0-10 1 1 2 10-20 3 6 5 1 15 20-30 1 8 9 2 20 30-40 3 9 3 15 40-50 4 4 8 Total 5 18 27 10 60 44. Compute the correlation coefficient for the following data. Advertisement Expenditure(‘ 000) Sales Revenue 5-15 15-25 25-35 35-45 Total (Rs.’ 000) 75-125 4 1 5 125-175 7 6 2 1 16 175-225 1 3 4 2 10 225-275 1 1 3 4 9 Total 13 11 9 7 40 215 45. The following table gives the no. of students having different heights and weights. Do you find any relation between height and weight. Weights in Kg Height in cms 150-155 155-160 160-165 165-170 Total 55-60 1 2 1 4 60-65 3 4 5 3 15 65-70 7 10 12 8 37 70-75 5 7 10 6 28 75-80 2 4 7 3 16 Total 18 27 35 20 100 RANK CORRELATION: 46. Two judges gave the following ranks to eight competitors in a beauty contest. Examine the relationship between their judgements. Judge A 4 5 1 2 3 6 7 8 Judge B 8 6 2 3 1 4 5 7 47. From the following data, calculate the coefficient of rank correlation. X Y 36 50 56 35 20 70 65 25 42 58 33 75 44 60 50 45 15 80 60 38 48. Calculate spearman’ s coefficient of Rank correlation for the following data. X 53 98 95 81 75 71 59 55 Y 47 25 32 37 30 40 39 45 49. Apply spearman’ s Rank difference method and calculate coefficient of correlation between x and y from the data given below. X Y 22 18 28 25 31 25 23 37 29 31 31 35 27 31 22 29 31 18 18 20 50. Find the rank correlation coeffici...
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