Mean Median Mode and Range

Add them all up and divide the sum by the number of numbers.

• Range

• Mode

• Median

• Mean

What is the mode in this data set?

1, 1 , 7 , 11, 19 , 19, 20

• 1

• 15

• 19

• 1 and 19

Measure of spread

• Range

• Mode

• Median

• Mean

Middle Value

• Range

• Mode

• Median

• Mean

Subtract lowest from highest

• Range

• Mode

• Median

• Mean

Step 1- put them in order from lowest to highest...

Step 2 find the one in the middle.

• Range

• Mode

• Median

• Mean

If there is no number that occurs more than once, there is not one of these:

• Range

• Mode

• Median

• Mean

A line plot can help you find this quickly, just look for the one that has the most X's!

• Range

• Mode

• Median

• Mean

What is the range of this data set?

• 10

• 8

• 4

• line plot

What is the mode of this data set?

• 10

• 7

• 18

• 9