Question
For two correlated variables x and y, if
coefficient of correlation between x and y is 0.8014, variance of x and y are 16 and 25 respectively. Then the covariance between x and y is:Solution
Put the given values in formula to get the value of covariance. Cov =(¼)*(1/5)*(0.8014) = 16.028
In each of the following questions the number series is given. One term of the series is denoted by x. You have to calculate of value of x and by using ...
17                          26                          37                   �...
21 11.5 13 ? 45.5 116.75
...25 13.5 12.5 20.75 39.5 ? 302.25
...94Â Â Â Â Â Â Â Â Â Â 282Â Â Â Â Â Â Â Â 284Â Â Â Â Â Â Â Â 852Â Â Â Â Â Â Â Â 856Â Â Â Â Â Â Â Â 2562
...6, 17, 21, 47, ?, 107
27   44    63    86   ?      146
6Â Â Â Â Â Â Â Â Â Â Â Â Â 7Â Â Â Â Â Â Â Â Â Â Â Â Â 15Â Â Â Â Â Â Â Â Â Â 46Â Â Â Â Â Â Â Â Â Â 185Â Â Â Â Â Â Â Â ?
...4 ? 113 449 1343 2681
...1600, 330, 48, 23.2, ?, 31.0464
