Give answer of ques 25 Measures of Correlation
25. Calculate rank correlation between advertisement cost and sales as per the data given below:
11.55-
Cost (in OOO
Sales (in lakh O
Equal Ranks
78 36 98
91
84 51
25
60
75
68
8290 62 65 39
62865853 47
{Coefficient ot rank correlation = O. 82}
26. Calculate the coefficient of rank correlation from the following data:
x
vallles
48
13
33
13
40
24
9
6
16
15
16
4 20 9
6
57
19
{Coetfjctent ot Rank Correlation = O. 731
