Mean, Median, Mode Lesson

Tells us which number occurs most often

Find the number that repeats the most in the data set

There can be more than one mode if multiple numbers repeat the same number of times

There can be no mode if none of the numbers repeat

The middle number in a data set

Order all of the numbers from least to greatest

If there is an odd number of numbers, find the middle number

If there is an even number of numbers, find the mean of the two middle numbers

Example: 1,2,3,4,4,5

Median would be 3+4 (7) divide by 2 = 3.5

Tells you the central tendency of a data set

Also called the average

Add together all of the numbers, then divide by the number of numbers

Tells us how spread out the data is

Subtract the smallest number from the largest number

Example: 1,3,4,5,5,8

Range would be 8-1 = 7