00:01
For this problem, we're asked to calculate the mode, mean, and median of the data shown here.
00:06
Now, the easiest for us here will be to compute the mean, x bar, which is equal to the sum of the data points divided by the total number of data points, which is then going to be the sum of xi over 1, 2, 3, 4, 6, 7, 8, 9, 10, 11.
00:27
So we'll be dividing by 11.
00:29
And i'll do that using onenote's capabilities here.
00:34
So i'll write x.
00:36
Can i do this x bar? yes, cool.
00:39
So we have x bar is equal to 18 plus, well, actually, wants to put brackets.
00:48
So it would be 18 plus 10 plus 15 plus 13 plus 13 plus 17 plus 15 plus 12 plus 15 plus 18 plus 16 plus 11.
00:56
Put one too many ones there.
00:59
And then we divide that by 11.
01:05
And we can see that the mean is about 14 .54 approximately.
01:10
Then to find the mode, or excuse me, to find the median, we'll have to list out the data points in order.
01:18
So i'll type these out.
01:21
You'll hear a lot of click clacking.
01:23
So let's see here.
01:24
We have 10, 11, 12, 13...