00:01
In this question, we have a dataset and this dataset is not in ascending order.
00:07
So first of all, let's write down the data.
00:10
That is 38 .2, 43 .9.
00:15
Then we have next value as 38 .4.
00:22
Next is 26 .2.
00:27
Then 41 .3 next is 42 .3 next is 37 .5 then we have 37 .2.
00:39
41 .2 and 42 .3 then last is 31.
00:45
So total number of terms are given in the data are 11.
00:49
And first of all we have to arrange the data in ascending order and then we will find its mean.
00:56
And formula for finding mean is sum of all observation that is summation of all xxx divided by number of observations so first of all let's tabulate the data in assembling form so here we can see this is our tabular manner of the data so i have placed all the data here and sum of all values are here as volt 419 .5 so this is our value for the sum of all given observations so first of all let's find out the mean of the given data.
01:29
So mean which is represented bar x is equal to sum of all observations divided by number of observations.
01:38
So here the sum is 419 .5 divided by number of observations which are 11.
01:44
So we will get our value as equal to 38 .1364.
01:51
So now we are done with the value of mean of the observations and now we can find our standard deviation s square and the formula for finding s squared is s square is sum of all observations of x minus mean to the whole square divided by n minus 1 so for formulate this value we have to find x minus mean for every observation here for all the 11.
02:27
So we need another table here.
02:30
So let's look at this table...