00:01
Okay, so i see that you need help with this problem.
00:02
And so it wants you to calculate the mean deviation about the median age for the age distributions of 100 persons given.
00:10
So between 16 to 20, the median is 18.
00:15
From 23 to 25, the median is 23.
00:20
From 26 to 30, the median's 28.
00:22
So the medians are for each age group are these.
00:31
And then i have the amount or the frequency in this column here.
00:42
And so then what i did was i am going to show you how i calculated the mean deviation.
00:53
What i did was i found the mean of this dataset here.
01:02
So i did 18 times 5, 23 times 6.
01:08
28 times 12 33 times 14 38 times 26 43 times 12 48 times 16 and 53 times 9 and i added up that sum and i divided by 100 and i got 37 .5 so this here is the median of the date i'm sorry this here is the mean of the data set so this here is the mean of this data set then what i did was i found the distance of each value from the mean.
01:41
So 18 is 19 .75 from the mean.
01:46
23 is 14 .75 from the mean and so on and so forth.
01:51
So i found the distance from each value to the mean.
01:54
Then what i did was i had to find the mean of the distances...