00:01
All right, so we got fredo and carl, and they have their average points, and then they have the other team players ' points and the other standard deviation for their team.
00:15
So, part a said something about, maybe, there we go, which one has the higher score compared to their team? well, to do that, if we want to compare two different data sets, we're going to use the z -score, which is the data point minus the mean over the standard deviation.
00:51
Okay? so, we're going to do that for fredo and for carl.
01:00
So, fredo, we do the data point, which is his score, 115, minus the mean over the standard deviation, is negative 1 .5.
01:28
Okay? and then carl is 175 minus the mean for his team, divided by 15, is negative 1 .87.
01:57
So, in negative numbers, little numbers are bigger.
02:03
So, fredo scored better compared to his team.
02:07
Now, the next one says three, and i'm going to abbreviate, standard deviations above the mean.
02:18
Okay.
02:20
So, for fredo, that means, oh, and let me, let me just double check it.
02:34
Yeah.
02:34
So, we're looking for their team...