Central Tendency Part 2

Central Tendency Part 2

Mean or Average

Add up all the numbers and divide it by the number of numbers you added.

Multiple Choice

Calculate the mean.

2, 9, 10, 6, 8

• 8

• 4

• 7

• 22

Multiple Choice

What is another word for AVERAGE?

• Mode

• Median

• Mean

• Not nice

Multiple Choice

Find the mean:
28, 18, 19, 18, 17

• 20
• 18
• 11
• 19

Multiple Choice

What is the mean of these numbers?
4,5,5,2,3,3,2,8

• 40
• 24
• 4
• 256

Mode

• 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

Multiple Choice

18, 4, 12, 2, 13, 18, 2, 2, 10
What is the mode of this data set?

• 18
• 2
• 16
• 9

Multiple Choice

What is the mode of the following data set?

5, 7, 7, 8, 12 , 12, 5, 6, 13, 12

• 5

• 7

• 12

• no mode

Multiple Choice

At Donald's Donuts the number of donut holes in a bag can vary. Help Donald find the MODE.

12,10,10,10,13,12,11,13,10

• 10

• 12

• 10 and 12

• No Mode

Median

• 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

Multiple Choice

Find the median:
3, 5, 7, 4, 3, 1

• 3 and 4
• There isn't one
• 3.5
• 3

Fill in the Blanks

Jack'd Science book has ten chapters. The numbers of pages in each chapter is given below. What is the median?

25, 11, 9, 18, 21, 24, 16, 13, 30, 12

Multiple Choice

Find the median for the set of numbers:

85, 42, 64, 71, 39, 56, 26

• 71

• 42

• 56

• 60

Multiple Choice

Find the median for the set of numbers:

23, 37, 11, 58, 13, 45

• 30

• 23

• 37

• 28

Poll

How do you feel about mean, median, and mode?