Unit -5 question
- Find Spearman's rank correlation coefficient:
Series x | 19 | 28 | 26 | 23 | 27 | 13 | 26 | 31 | 21 |
2Series y | 21 | 28 | 23 | 25 | 31 | 17 | 22 | 29 | 27 |
2. Calculate Pearson’s coefficient of correlation from the following data
X | 63 | 66 | 67 | 67 | 71 | 69 | 68 | 59 |
|
Y | 66 | 64 | 65 | 66 | 67 | 68 | 70 | 71 |
|
3. Calculate Spearman’s rho for the data
IQ | Rock |
99 | 3 |
120 | 45 |
98 | 30 |
102 | 45 |
123 | 16 |
105 | 25 |
85 | 17 |
110 | 24 |
117 | 26 |
90 | 45 |
4. Compute rank correlation between maths marks and stats marks
Math | 80 | 56 | 50 | 48 | 50 | 62 | 60 |
Stats | 90 | 75 | 75 | 65 | 65 | 50 | 65 |
5. The height of father and son given below
Height of father | 65 | 66 | 67 | 67 | 68 | 69 | 71 | 73 |
Height of son | 67 | 68 | 64 | 68 | 72 | 70 | 69 | 70 |
Calculate Karl Pearson coefficient of correlation
6. The deviation from their mean is given below. Calculate Karl Pearson coefficient of correlation
X | -4 | -3 | -2 | -1 | 0 | 1 | 2 | 3 | 4 |
Y | 3 | -3 | -4 | 0 | 4 | 1 | 2 | -2 | -2 |
7. Calculate Karl Pearson coefficient of correlation
Wages | 100 | 101 | 102 | 100 | 99 | 97 | 98 | 96 | 95 |
Cost of living | 98 | 99 | 99 | 97 | 95 | 92 | 95 | 94 | 90 |
8. Explain correlation scattered diagram method
9. How to choose between Pearson and Spearman correlation?
10. Calculate rank correlation for the following data
Judge A | 7 | 8 | 2 | 1 | 9 | 3 | 12 | 11 | 4 |
Judge B | 6 | 4 | 1 | 3 | 11 | 2 | 12 | 10 | 5 |
