1. Tuesday, March 10 Today's Objectives
Find the mean, median and mode of data.
Arrange data into frequency tables.
Use frequency tables to draw histograms of the data.

2. Notes Over 7.2 Frequency Distribution
The average yearly rainfall in inches in 20 cities in the United States is given below.
49, 15, 4, 7, 42, 8, 52, 9, 44, 11, 58, 34, 33, 23, 30, 47, 29, 53, 7, 11
DATA
Tally
Frequency
1 – 10 5
11 – 20 3
21 – 30 3
31 – 40 2
41 – 50 4
51 – 60 3

3. Notes Over 7.2 2. Total the frequencies.
Frequency Distribution
The average yearly rainfall in inches in 20 cities in the United States is given below.
49, 15, 4, 7, 42, 8, 52, 9, 44, 11, 58, 34, 33, 23, 30, 47, 29, 53, 7, 11
2. Total the frequencies.
3. Find the mode and median average rainfall for these 20 cities.
Mode:
Median:

4. Notes Over 7.2 Frequency Distribution
The average yearly rainfall in inches in 20 cities in the United States is given below.
49, 15, 4, 7, 42, 8, 52, 9, 44, 11, 58, 34, 33, 23, 30, 47, 29, 53, 7, 11
DATA
Tally
Frequency
1 – 10 5
11 – 20 3
21 – 30 3
31 – 40 2
41 – 50 4
51 – 60 3

5. Notes Over 7.2 2. Total the frequencies.
Frequency Distribution
The average yearly rainfall in inches in 20 cities in the United States is given below.
49, 15, 4, 7, 42, 8, 52, 9, 44, 11, 58, 34, 33, 23, 30, 47, 29, 53, 7, 11
2. Total the frequencies.
3. Find the mode and median average rainfall for these 20 cities.
Mode:
Median:
4. Make a histogram of the data.

6. Notes Over 7.2
Frequency Distribution

7. Extra Practice Worksheet 7.2
Notes Over 7.2
Pg 7-16, Lesson 7.2 #5-22
Extra Practice Worksheet 7.2