00:01
Alright, so we want to calculate the sample mean.
00:04
So that's going to just be the sum of our x's over n.
00:09
So when we add these together, we'll have 12 zeros plus 7 twos plus 5 22s plus no 22 fives, actually 17 eights, 20 nines, and then 14 11s and 25 15s.
00:47
And then divide that by the sum of the frequency, which is 12 plus 7 plus 22 plus 17 plus 20 plus 14 plus 25.
01:03
Let's toss all that into a calculator.
01:18
So when i toss this into a calculator, 12 plus 7 plus 22 plus 17 plus 20 plus 14 plus 25, what i should get for on average is 9 .89.
01:33
Sorry, 9 .98.
01:36
And then the median has to concern the median or the middle.
01:46
So if we were to set it up and write out all the numbers, we'll try to find our middle number.
01:51
So we would have 12 zeros and do it at the other end, it'd be 25 15s.
01:57
So these 12 would take away those 12s.
01:59
We have 13 15s left...