Displaying & Analyzing Data Stem-and-leaf Plot Box-and-Whisker Plot Venn Diagrams.
Splash Screen. 1.A 2.B 3.C 4.D Five Minute Check 1 (over Lesson 8-3) Which choice shows a...
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Lesson Menu Main Idea and Vocabulary Example 1:Display Data Using a Bar Graph Example 2:Display Data Using a Histogram Example 3:Analyze Data to Make Inferences Example 4:Analyze Data to Make Inferences
Transcript of Splash Screen. 1.A 2.B 3.C 4.D Five Minute Check 1 (over Lesson 8-3) Which choice shows a...
1. A2. B3. C4. D0% 0%0%0%
(over Lesson 8-3)
Which choice shows a stem-and-leaf plot for the set of data? 11, 32, 21, 43, 57, 5, 53, 45, 75, 25, 37, 73, 56, 45, 28, 15, 3, 72, 39, 20, 22
A. B.
C. D.
Main Idea and VocabularyExample 1:Display Data Using a Bar GraphExample 2:Display Data Using a HistogramExample 3:Analyze Data to Make InferencesExample 4:Analyze Data to Make Inferences
• bar graph – method of comparing data by using solid bars to represent quantities.
• Histogram – special kind of bar graph that uses bars to represent the frequency of numerical data that have been organized in intervals.
• Display and analyze data using bar graphs and histograms(2.6.8a) (M7.E.1.1)
Analyze Data to Make Inferences
DINING OUT The bar graph shows the number of times people dine out each month. How many people are represented in the histogram? Justify your answer.
Answer: So, 50 people were surveyed.
Find the sum of the heights of the bars in the histogram.5 + 6 + 12 + 15 + 7 + 5 = 50
1. A2. B3. C4. D
0% 0%0%0%
A. 75 houses
B. 80 houses
C. 85 houses
D. 90 houses
HOUSING The bar graph shows the number of houses sold in various price ranges. How many houses are represented in the histogram?
Analyze Data to Make Inferences
DINING OUT The bar graph shows the number of times people dine out each month. What percent of people surveyed ate out more than 40 times per month?
number of people who ate out → more than 40 times per month
→ total number
Write the fraction as a decimal.
Write the decimal as a percent.
Analyze Data to Make Inferences
Answer: So, 24% of the people surveyed ate out more than 40 times per month.
1. A2. B3. C4. D
0% 0%0%0%
A. 30%
B. 37.5%
C. 46%
D. 57.5%
The bar graph shows the number of houses sold in various price ranges. What percent of houses were sold for more than $200,000?
1. A2. B3. C4. D
REVIEW
c. 1 + 6 + 14 + 18 + 6 + 4 = 49; Find the sum of the heights of the bars.
d. About 57%
End of the Lesson
Five-Minute Check (over Lesson 8–3)
Image Bank
Math Tools
Line Plots
