Intro to Mean and Median

When finding the median, what do you do if there are two middle numbers?

• Add them together and divide by 2

• Write them both as the answer

• Give up

• Pick one

Find the median of these numbers:

4,2,7,4,3 (Put them in order, then find the middle number)

• 2

• 5

• 7

• 4

Find the mean of these numbers:

2, 57, 38, 42, 6 (Add the numbers together and then divide by 5 because there are 5 numbers.)

• 29

• 38

• 50

• 145

Find the median.

12, 5, 9, 18, 22, 25, 5

(Put the numbers in order first to find the middle number.)

• 9

• 8

• 12

• 18

Find the Mean of:

8, 14, 32, 6, 15

(Add the numbers together, then divide by 5 because there are 5 numbers)

• 15

• 175

• 75

• 12

What is the median of:

6, 12, 16, 11, 8, 4, 1, 11, 4

(Put them in order, then find the middle number)

• 11

• 6

• 8

• 7

Find the mean of these numbers:

2, 57, 38, 42, 6 (Add them together. Then divide by the # of numbers)

• 29

• 38

• 50

• 145

Find the median.

• 9

• 8

• 12

• 18

Find the median.

12, 5, 9, 18, 22, 25, 5

(Put the numbers in order first in order to find the middle number.)

• 9

• 8

• 12

• 18

What is the first thing you should do before finding the median or the mode?

• Start crossing numbers off

• Put numbers in order from least to greatest

• List the numbers how they are

• Look for repeats