00:01
Hello students let's do this question here the sample of n equal to ten observations are given then we have to find out first the sample mean x bar equal to summation of x i divided by n then sample variance s square equal to 1 upon n minus 1 summation of x i minus x bar bracket square then population variance sigma square equal to 1 upon n summation of x i minus x bar bracket square square.
00:31
Therefore we get sample standard deviation as equal to square rate of s square and population standard division sigma equal to square root of sigma square.
00:40
Then next we have to find out the value of range.
00:45
So formula for range equal to l minus s, that is largest minus smallest observations and median equal to median, median equal to middle value.
01:01
First we find out the value of sample mean, that is xxma equal to summation of xi divided by n equal to 286 divided by 10 equal to 28 .6, then, sample variance s square equal to 1 .9 into summation of xi minus x bar bracket square is 102 .4 equal to 11 .3777.
01:26
Therefore, sample's elevation as equal to 3 .373 .30.
01:31
Now, next, population variance, sigma square equal to 102 .4 divided by 10, equal to 10 .24...