1. Frequency Tables and Histograms
Common Core Math I
Unit 2

2. Frequency Frequency is how often something occurs.
Sam played football on
Saturday morning
Saturday afternoon
Thursday afternoon
The frequency was 2 on Saturday, 1 on Thursday and 3 for the whole week.

3. Frequency Distribution
“values” and their frequency how often each “value” occurs

4. Newspapers Sold
These are the numbers of newspapers sold at a local coffee shop over the last 10 days:
22, 20, 18, 23, 20, 25, 22, 20, 18, 20
We will count how many of each number there is.
Newspapers Sold
Frequency 18 2 19 20 4 21 22 23 1 24 25

5. Newspapers Sold
Newspapers Sold
Frequency
15-19 2
20-24 7
25-29 1

6. Histograms
A histogram is a graphical display of data using bars of different heights.
It is similar to a bar chart, but a histogram groups data (numbers) into ranges.
And you decide what ranges to use!