00:01
We want to calculate a grade point average.
00:03
So let's see what information we have.
00:06
So they got an a in a five -hour course, a d in a one -hour course, an a in another one -hour course, and an f in another.
00:19
Okay, and i'm just going to put the points this is worth here.
00:22
So an a is four points.
00:24
A d is 1 .40.
00:27
0.
00:29
How do we find the grade point average? so a grade point average is a weighted mean.
00:39
And to find it, we need to take each point, which i'll call x, multiply it by the weighting.
00:48
So if i put xi, i multiply it by the waiting, and then i add these up.
00:56
So the waiting is the proportion of the overall score that this course is going to take up...