00:01
So we have a normal distribution here and it says label the different standard deviations on it.
00:08
About so zero standard deviations.
00:12
One, two, and three.
00:17
One, two, and three.
00:23
And based off of our 68, 95, 997 rule, this is going to be 34 % because it's 68 split in half.
00:33
This is going to be 13 .5 because all four of those numbers now add up to 95%.
00:42
And then for the 99 .7, we've already accounted for 95 of it.
00:48
So this is going to be 2 .35 and 2 .35 and then 15 % in the very, very, very end tails.
01:00
So what percentage lies between negative 1 and 2 standard deviation? so that's going to be 0 .34 plus 0 .34 plus 0 .135 .02 -35.
01:18
So 0 .34.
01:21
That's the 68%.
01:23
That's one standard deviation.
01:25
135.
01:26
That's half of the two standard deviation.
01:29
And then actually, hold on, that's where we're stopping that...