00:01
In this question we have to find the value of mean score as well as median score based on the given information.
00:07
So firstly we can write that the test score will be here 3.
00:11
Now the frequency will be here 2 and then we can make a column of cumulative frequency.
00:17
So that is also 2 and then in the second row it will be 4 here.
00:22
Now it is here 0 and then it will be 2.
00:24
And now here it will be 5 and then the frequency will be 5 and the cumulative frequency will be 9.
00:32
Therefore the value of x will be here 6 and then it is here going to be 8 and now it will be here we can say cumulative frequency has to be written.
00:43
So cumulative frequency is going to be here 17 and then here we are having 7 and then it will be here 2 and this is here 19.
00:54
Now we can say that if we write the value of x as 8 then it will be here 3 and this is here going to be 22.
01:05
Now if the value of x that is test score is 9 then the frequency will be here 3 and the cumulative frequency which is basically the addition of all the previous frequencies then it will be here 25.
01:19
Now if it is 10 over here then it will be 0 and then here it is 25.
01:25
Right? so based on this very information we can say that the value of mean can be here written to be equals to summation of f multiplied with x divided by summation of f.
01:38
So here it is going to be 6 plus we can say 25 and then it will be here we have not written the 0 value and here we can say that it will be 48 then it is here 14 plus it will be 24 then it is here 27 and then in the denominator we are going to have the value which is 23...