00:01
Once again, welcome to a new problem.
00:05
This time we're dealing with measures of central tendency, and these measures of central tendency are under descriptive statistics.
00:24
So descriptive statistics.
00:27
So you're looking at measures of central tendency and this includes the mean.
00:32
The median and the mode.
00:41
The mean is the average.
00:44
The median is the middle.
00:49
And the mode is the most.
00:53
For the mean, you have the sample mean, which is x bar.
01:04
X bar is the same as some vax of a small end, where small n is the sample size.
01:18
And then of course you have the population mean and the population mean is mu which is represented by sum of x over capital n.
01:31
Capital n is the population size.
01:40
For the median, for even numbers, you take the x, you take the x and xx, plus xm where n is the middle number or rather let's say x n and let's call them something else let's call them x r plus xp where these are the two middle numbers and then you get their average you divide by two this is the of even numbers and if you have odd numbers, the median is just the middle value, the actual middle value.
02:44
We have a new problem with mba programs, in total eight mba programs with different variables, including pre and post mba salaries, percentage increase, undergraduate gpa, and we want to determine the and the median of pre -mpa salaries.
03:08
So we're given the eight different schools...