Year 7 Term 2 Revision

To find the _________ you add up all the numbers and then divide by how many numbers you have.

• Mean
• Median
• Mode
• Range

To find the ______ you find the largest number minus the smallest number.

• Mean

• Median

• Mode

• Range

To find the ________ you put all numbers in order from least to greatest and find the number that is in the middle.

• Mean
• Median
• Mode
• Range

What is the mode?

• # happening the most
• the average
• biggest - smallest
• the middle #

Find the mean.
90, 100, 95, 85, 60, 80

• 85
• 84
• 86
• 90

Find the range.
5, 15, 10, 20, 15, 10, 15

• 5

• 10

• 15

• 13

Median:
67, 74, 95, 98, 98, 99, 102

• 102
• 67
• 98
• 90.4

Find the mode of these numbers:

4,4,6,6,2,2,6,2,4,2

• 2

• 4

• 6

• No mode

Dr. Dre is a dentist. He needs to report on the average number of cavities that his patients have.
1,0,1,5,6,3,4

• 3.33
• 2.85
• 3
• 3.5

The median for these numbers is? (-3,-8,-5,-10,6,3)

• -4

• -5

• -3

• -8