1. 12.1 Frequency Tables and Line Plots

2. How do I create and interpret frequency tables and line plots?

3. Activator
Click to activate…

4. Vocabulary
Frequency Table – a table that displays the number of times each item or category occurs in a data set.
Line Plot – a number line diagram that uses X marks to show the frequencies of items being tallied.
Range-the difference between the greatest and least values in the data set

5. Example of a Frequency Table How many books did you read this summer?
# of Books
Tallies
Frequency 1
llll 5 2 3
llll l 6 4 ll 7
students

6. Completed Line Plot
When the items being tallied are numbers, a line plot can be used to visually display numerical data. A line plot uses X marks above a number line to show the frequencies.
The X marks above the number line show the frequencies.
X X X X X X
X X X X X
X X X X X
The Number Line shows the number of books read.
X X X X
X X 1 2 3 4 5 6 7
Number of Books Read

7. Line Plot Example Number of sit-ups in a minute

8. Ticket out the Door
Create a frequency table and line plot from the information below.
How many pets do you have?
Data:

9. Homework
Workbook page 99 (1-6) all