00:01
In the a part, we need to find out e of s, that is sigma x into p of x is equal to x and this will be minus 18 to 0 .15.
00:19
Then 18 from 2 .25.
00:24
We will get 11 .7 % and e of d will be sigma sigma x.
00:34
Into p of x is equal to x and this we will get 14 .75 percent.
00:41
This is our a part and in the b part we need to calculate e of s square which is sigma x square into p of x is equal to x which is 208 .2 and st of s this is under root b of s square minus a of s whole square and this will be 8 .445 % and e of b square sigma x square into p of x is equals to x this is 448 .75 and s d of d is under root e of d square minus a of d quere which is 50 .2049 percent this is our b part so in the same part p of s d which is sigma h d p of s is equal s and p of s and p of s of p .c equals to d.
02:15
Right and this we will get minus 8 into 35 into 0 .15 plus 18 into minus 10 into 0 .25.
02:32
By solving this we will get 81.
02:39
It's the covariance of xd.
02:44
This will be e of s d minus e of s into this is the formula for covariance of s t and we will get minus 91 .575 now coming to the d part correlation of s comma d this will be so correlation of s comma d it is covariance of s comma d by st of s and st of d.
03:27
So this will be minus 0 .7132...