00:01
So i've turned the information from the histogram into a little table with the bins and the different frequencies.
00:08
Now, for answering this problem, trying to find the standard deviation, the first step that we can, or that we'll take here, is essentially translating this into a probability distribution.
00:19
So first thing that'll note is that we have that our total number of samples here is 28.
00:25
So we'll be able to find the probability, or actually, i'll say it this way, we'll set a, for our probability distribution, the x value to be the midpoint of each one of our bins.
00:36
So it would be 950, 1050, 1150, and 1250.
00:42
And then the probability of each outcome we'll find by taking the frequency for each category.
00:50
Pardon me, i keep tripping over my tongue.
00:52
We take the frequency for each category and divide that by 28.
00:55
So we find that the probabilities for each category or each x value would be 0 .243...