00:01
Right here we need to calculate the range and interquartile range.
00:05
In addition, and we need to create a box plot.
00:07
So how will you get q1 and q3? well, q1, q3, and q2 are all medians.
00:13
So let's make a sample, 1, 2, 3, 4, 5.
00:19
A simple data set that has 5.
00:22
1, 2, 3, 4, 5.
00:25
Simple.
00:25
So the first thing to do is to put your data in order.
00:29
Now, the next thing that you need to do is find what's called the median.
00:32
The median is in the middle.
00:35
So if you look at your 5, 1, 2, 3, 4, 5 data points, the median is going to be in the middle, which is going to be, in this case, 3.
00:44
All right, so 3 is the median 3.
00:48
Now, i'm going to get that a different name.
00:50
Instead of the median, i'm going to call it q2.
00:53
And you'll see why it's q2 in a second.
00:55
So what you want to do is recognize that this q3, separates your data into two halves right here.
01:03
So you have this half of the data and you have this half of the data.
01:07
So what you want to do is find the median that is in the first half.
01:13
So the median of the first half of the data is going to be between one and two.
01:17
And the median of the second half of the data is going to be between four and five...