00:01
In this problem we have to find standard deviation of the data.
00:05
And the data is, that is, x is 8, 9, 10, 11, 12 and 13.
00:16
Now probability of x is equal to x will be 0 .1, 0 .2, 0 .1, 0 .2, 0 .2, 0 .2, 0 .2, 0 .2, 0 .2, 0 .0 .2, 0.
00:28
Now we have to make a column of x square that is 64 81 hundred one twenty one one forty four one sixty nine now it is x square px that is it becomes 6 .4 and then it is 16 10 24 point two and 28 .8 33 .8.
01:01
Now it is xpx that is 0 .8, 1 .8, 1, 2 .2, 2 .4 and 2 .6...