Mean, Mode, Median

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2

Definition

Median

is in the

Middle

Slide 17

Definition

Median – the middle number in a set of ordered numbers.

1, 3, 7, 10, 13

Median = 7

Slide 18

How to Find the Median in a Group of Numbers

Step 1 – Arrange the numbers in order from least to greatest.

21, 18, 24, 19, 27

18, 19, 21, 24, 27

Slide 19

How to Find the Median in a Group of Numbers

Step 2 – Find the middle number.

21, 18, 24, 19, 27

18, 19, 21, 24, 27

Slide 20

How to Find the Median in a Group of Numbers

Step 2 – Find the middle number.

18, 19, 21, 24, 27

This is your median number.

Slide 21

How to Find the Median in a Group of Numbers

Step 3 – If there are two middle numbers, find the mean of these two numbers.

18, 19, 21, 25, 27, 28

Slide 22

How to Find the Median in a Group of Numbers

Step 3 – If there are two middle numbers, find the mean of these two numbers.

21+ 25 =

46

2)

46

23

median

Slide 23

What is the median of these numbers?

16, 10, 7

10

7, 10, 16

Slide 24

What is the median of these numbers?

29, 8, 4, 11, 19

11

4, 8, 11, 19, 29

Slide 25

What is the median of these numbers?

31, 7, 2, 12, 14, 19

13

2, 7, 12, 14, 19, 31

12 + 14 = 26

2)

26

Slide 26

What is the median of these numbers?

53, 5, 81, 67, 25, 78

60

53 + 67 = 120

2)

120

5, 25, 53, 67, 78, 81

Slide 27

Definition

Mode

is the most

Popular

Slide 28

Definition

A la mode – the most popular or that which is in fashion.

Baseball caps are a la mode today.

Slide 29

Definition

Mode – the number that appears most frequently in a set of numbers.

1, 1, 3, 7, 10, 13

Mode = 1

Slide 30