 Hi, and welcome to our session. Let us discuss the following question. The question says, find the mean deviation above the median for the data in exercises 7 and 8. This is the data given to us, and we have to find the mean deviation about the median of this data. Let's begin with the solution. We will first make a table of the given data. We will first arrange the given x i's in ascending order. Now, here the x i's are already in ascending order. So let's write them as it is. Now we will write its corresponding frequencies. In the column, we will calculate the cumulative frequency. Now, the cumulative frequency of f i is 3, 3 plus 5, that is 8, 6 plus 8, that is 14, 14 plus 7, that is 21, 8 plus 21, that is 29. Now we will find n. n is equal to summation i goes from 1 to 5 f i. This is equal to 3 plus 5 plus 6 plus 7 plus 8, and this is equal to 29. And 29 is odd. We know that if n is odd, then the median is that x i observation whose cumulative frequency is equal to or just greater than n plus 1 by 2, an observation. So n plus 1 by 2 is equal to 29 plus 1 by 2, and this is equal to 15. Median is equal to that observation whose cumulative frequency is greater than or equal to 15. Now, observation whose cumulative frequency is greater than equal to 15 is 30. So median is equal to 30. Now we will find x i minus n. In the first row, x i is 50, and we know that m is equal to 30. So we have 15 minus 30. 15 minus 30 is minus 50. Then we have 21 minus 30. 21 minus 30 is minus 9. 27 minus 30 is minus 3. 30 minus 30 is 0. 35 minus 30 is 5. Now we will find mod of x i minus n. Absolute value of minus 15 is 15. Absolute value of minus 9 is 9. Absolute value of minus 3 is 3. Absolute value of 0 and 5 is 0 and 5. Now we will find f i into mod x i minus n. 3 into 15 is 45. 5 into 9 is 45. 6 into 3 is 18. 7 into 0, 0, 8 into 5 is 40. On adding all this, we get 148. So summation i goes from 1 to 5, f i into mod x i minus n is 148. Now we will calculate mean deviation about median. Now mean deviation about median is equal to 1 by n into summation. i goes from 1 to 5, f i into mod x i minus n. n is equal to 29. So we have 1 by 29 into 148. And this is equal to 5.1. Hence our required answer is 5.1. So this can be the station. Bye and take care.