00:01
In this exercise, we perform some calculations on the data set given.
00:05
For the first part, we're asked to compute the mean, median, and the mode.
00:10
The sample mean is calculated by summing up all of the sample data and dividing by the sample size.
00:32
And it's a sample of size 7.
00:34
There are 7 data in the sample.
00:38
This comes out to 5.
00:43
We also want the median.
00:44
The median is the value of the data set such that 50 % of the data are below it and 50 % are above it.
00:56
One way to find the median is to first sort the data numerically from small to big or from big to small.
01:10
And then when we have an odd number of data such as this case, the median is the middle most value when it's sorted numerically.
01:20
So here the median is 4.
01:27
And we also need to calculate the mode.
01:30
The mode is the value that occurs most frequently.
01:34
So we can see looking at the data that there are two twos, but only one of each of the other values.
01:41
So therefore the mode is two...