00:01
Hi, i'm david and i'm here to have jansh sending the question.
00:03
In the question here, we're given a table of the drawn probability for the two random variables x and y.
00:10
Now let me begin up here.
00:12
And from the table here, first of all i need to find the marginal of the x.
00:17
So we add up everything here, we get equal to the 0 .16.
00:23
This one will get equal to the 0 .48.
00:28
And this one gets equal to the 0 .36 and same thing for the marginal probability of the y.
00:36
Then we end up everything here we get equal to the 0 .4, this one gets equal to the 0 .4 and this one gets equal to the 0 .2.
00:47
Now in the first question i asked let you find the covariance on the x and y.
00:52
We know that the covariance on the x and y equal to the e of the x and y equal to the e of the x and then minus e under x times the e on the y.
01:02
So therefore the first time we need to find the e on the x first.
01:07
So in the x equal to the summation of the x times the proper place the x.
01:12
So we will multiply them like a pair and then we add them up.
01:16
Then 1 times 016 plus 2 times 0 .48 plus 3 times 0 .36 and then we get equal 2.
01:28
0 .16 plus 2 times 0 .48 plus 3 times 0 .36 equal to the 2 .2.
01:36
Similarly, e on the y equal to the summation of y times the pump up plight in the y.
01:42
We will multiply them like a pair and then we add them up.
01:47
Then we have the 1 times the 0 .4 plus 2 times 0 .4 plus the 3 times 0 .2...