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L E S S O N Analyzing and Comparing Statistical Graphs 22
Warm Up
1. Vocabulary The set of real numbers includes all numbers and (1) all numbers.
Name the point on the number line that corresponds to each given value.
(SB 1)
ABC
3 5. Find the difference between 12.3 million and 20,000.
(7)
Numerical data can be displayed in different ways. Bar graphs use vertical and horizontal bars to represent data.
Exploration Analyzing Bar Graphs
A sample survey asked students to name their favorite type of pet. The
results are shown in the bar graph.
-2 -1 0 1 2 2. -1.5 3. 1.75 4. _2
New Concepts
Math Reasoning
Predict If 1000 students are surveyed, how many are likely to pick dogs as their favorite pets?
Favorite Pets
Fish Hamster Bird Cat Dog
a. What information is shown on the vertical axis? the horizontal axis?
b. Use the graph to complete the table.
c. How many students were surveyed?
d. Analyze Which pet did students choose twice as often as the hamster? Explain.
0 50 100 150 200
Number of Students
Pet
Dog
Cat
Bird
Hamster
Fish
Number of Students
Online Connection www.SaxonMathResources.com
Lesson 22 127
Type of Pets
