Median Formula: The median is the middle of a group of numbers. It is a simple way to represent a lot of data with just one number. To find it, you put the numbers in order and pick the middle one. In ...

The mean is the most commonly used measure of average. To find the mean of a list of numbers, add them all together and divide by how many numbers there are: \(\text{mean} = \frac{\text{sum of all the ...

Quartiles are the values that divide a data set into quarters: Put the values in order Divide the list into four equal parts The Quartiles are at the divisions The interquartile range shows the range ...