AP Statistics Structured Notes
Chapter 1 Exploring Data
The Practice of Statistics, 4th Edition
Unit Essential Question:
How are data displayed, analyzed, and interpreted in the context of a real-world situation?
Displaying Distributions
with Graphs
Describing Distributions
with Numbers
LEQ:
LEQ:
How are data displayed and
interpreted graphically?
How are data described and
interpreted?
KEY VOCABULARY
Individuals
Pie Charts
Variables
Dotplot
Categorical Variable
Stemplot
Association
Shape
Center
Skewed
Mean
Median
Standard Deviation
5-number summary
Resistant
Relative Frequency table
Segmented Bar Graph
Bar graphs
Two-way table
Distribution
Quantitative Variable Frequency table
Histogram
Spread
Outliers
Symmetric
Quartiles
Boxplots
Variance
Conditional Distribution
Marginal Distribution
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AP Statistics Structured Notes
Chapter 1 Exploring Data
The Practice of Statistics, 4th Edition
1. What are the types of variables and how can you distinguish between
them?
2. What is the pattern of variation of a variable?
3. What is inference?
4. What is the difference between a relative frequency table and a
frequency table?
5. What types of graphs are appropriate for categorical data?
6. Why is it important when creating a bar graph to keep the bars equal
width with equal spaces?
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AP Statistics Structured Notes
Chapter 1 Exploring Data
The Practice of Statistics, 4th Edition
7. Why shouldn’t you replace the bars of a bar graph with pictures?
8. What do conditional distributions tell about the data?
9. What is a segmented bar graph? What is it used for?
10. Even a strong association between two variables can be influenced by
other _______________ variables.
11. What is a dotplot? What is one advantage and one disadvantage of
this type of graph?
12. S_________________________________________________
O_________________________________________________
C_________________________________________________
S_________________________________________________
13. Draw an example of a symmetric graph.
14. Draw an example of a graph that is skewed left.
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AP Statistics Structured Notes
Chapter 1 Exploring Data
The Practice of Statistics, 4th Edition
15. Draw an example of a graph that is skewed right.
16. What does it mean for a graph to be unimodal, bimodal, or
multimodal?
17. What is an advantage and a disadvantage of using a stemplot?
18. Why would splitting stems in a stemplot be useful?
19. When is a back to back stemplot useful?
20. What is an advantage and a disadvantage of using a histogram?
21. What is 𝑥̅ ? How do you find its value?
22. What are the measures of center?
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AP Statistics Structured Notes
Chapter 1 Exploring Data
The Practice of Statistics, 4th Edition
23. Explain why the median is resistant to extreme observations, but the
median is nonresistant.
24. What is the spread of the middle half of the data called? How is it
calculated?
25. When does an observation become an outlier?
26. What is the five-number summary? Why is it important?
27. What does standard deviation measure?
28. What is the relationship between variance and standard deviation?
29. Compare bar graphs and histograms.
30. Don’t forget to LABEL your graphs.
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Chapter 1 Exploring Data
AP Statistics Structured Notes
MEAN
The Practice of Statistics, 4th Edition
MEDIAN
Symbol:
Paired with:
When it is best to be used:
Symbol:
Paired with:
When it is best to be used:
AP RESPONSES ON THE AP TEST REQUIRE A “THINK-SHOW-TELL” APPROACH.
This can be accomplished with the 4 step plan:
1.
2.
3.
4.
State
Plan
Do
Conclude
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