00:01
Alrighty, so for number 14, we need to go ahead and find the mean in order to be able to find the variance and the stern deviation, and then eventually the range of this data about rush hour traffic.
00:10
So i add up all those numbers, 52 to 58.
00:13
There's 12 drivers.
00:14
So you add up those numbers and divide by 12.
00:17
You should get 56 .25.
00:21
And the, so 56 .25.
00:28
And what's nice is that's going to be the same.
00:31
All the way about the chart on column, we just try to narrow down, but then the idea is now that we're put down x minus mean squared, that way two five gets repeated use.
00:39
So we're going to do 50 to and s 56 .25 and squared, you should get a positive 18 .0625.
00:48
Then 61 minus 56 .25 squared is going to be 22 .5.
00:55
And so on.
00:56
We're going to get 10 .55625.
01:01
Then we get 14 .0625...