This document discusses measures of central tendency including the mean, median, and mode. It provides examples of calculating these values for different data sets. It also discusses using the mean to balance a seesaw with blocks and the concept of deviations from the mean. The homework is to finish the class notes on these topics.

1. Measures of Central Tendency.notebook March 07, 2013
AIM: Measures of Central Tendency
Do Now
1

2. Measures of Central Tendency.notebook March 07, 2013
2

3. Measures of Central Tendency.notebook March 07, 2013
3

4. Measures of Central Tendency.notebook March 07, 2013
Anticipatory Set
Estimate the average of the following data set without
calculating: {4, 7, 8, 12, 16}
4

5. Measures of Central Tendency.notebook March 07, 2013
Task: Create a balanced seesaw:
USE ONE BLOCK
0 1 2 3 4 5 6 7 8 9 10 11 12
5

6. Measures of Central Tendency.notebook March 07, 2013
Task: Create a balanced seesaw:
USE ONE BLOCK
0 1 2 3 4 5 6 7 8 9 10 11 12
6

7. Measures of Central Tendency.notebook March 07, 2013
Task: Create a balanced seesaw:
USE TWO BLOCKS
0 1 2 3 4 5 6 7 8 9 10 11 12
7

8. Measures of Central Tendency.notebook March 07, 2013
Question: How did you
determine where to place the
block to balance the seesaw?
8

9. Measures of Central Tendency.notebook March 07, 2013
9

10. Measures of Central Tendency.notebook March 07, 2013
Find the mean, median, mode and range of the following data sets.
1.) 6, 9, 13, 6, 6
Mean =____ Median =______ Mode =______ Range =______
10

11. Measures of Central Tendency.notebook March 07, 2013
2.) 2, 1, 8, 0, 2, 4, 3, 4
Mean =____ Median =______ Mode =______ Range =______
11

12. Measures of Central Tendency.notebook March 07, 2013
3.) 4, 7, 8, 2, 1, 2, 4, 2
Mean =____ Median =______ Mode =______ Range =______
12

13. Measures of Central Tendency.notebook March 07, 2013
4.) 1, 6, 11, 3, 7, 2
Mean =____ Median =______ Mode =______ Range =______
13

14. Measures of Central Tendency.notebook March 07, 2013
Deviations from the
Data Values Mean
Mean
1
3
3
7
8
9
11
What is the sum of the deviations?
14

15. Measures of Central Tendency.notebook March 07, 2013
15

16. Measures of Central Tendency.notebook March 07, 2013
Critical Questions:
1.) Does the mean have to be a member of the
data set?
2.) What is the sum of the signed distances of the
numbers from the mean?
16

17. Measures of Central Tendency.notebook March 07, 2013
Homework
Finish Class Notes
17