00:01
In this question we have been given the following sample data 6, 5, 9, 3, 11, 5 and 10.
00:09
So here we can observe the maximum value is equal to maximum value is equal to 11 and the minimum value is equal to 3.
00:20
Minimum value is equal to 3 and the maximum value equals to 11.
00:25
So we can calculate range as, we know range is calculated as maximum value is calculated as maximum value.
00:31
Minus minimum value, so range is equal to 11 minus 3.
00:37
Therefore we got the required value of range is equal to 8.
00:42
Now next, calculating the standard deviation and variance.
00:46
First, to calculate variance we need mean x bar which is equal to sum of xi over n.
00:53
So calculating sum of xi 6 plus 5 plus 9 plus 3 plus 11 plus 5 plus 10 divided by total number of observations 7...