00:01
So first let's talk about what is the mean.
00:02
The mean is one way to compute the average or the center, which is just the sum of all the values over the total.
00:10
Now the issue is, i only know there's six values between zero and 11, 12 between 12 and 23.
00:16
I don't have exact values here.
00:18
But what i can do with this class is i can find the average of these values, right? add at my two endpoints, divide by two, and my average is 5 .5.
00:28
So really my sum is going to be 5 .5 times 6 plus 12.
00:34
The average is 12 to 23, so add those 2 divided by 2.
00:38
The middle number is 17 .5.
00:40
So there's 12 numbers that have an average of 17 .5, but about 24 and 35, add them divide by 2, 29 .5...