OpenIntro
Statistics Chapters
1–3 | Data,
Summaries &
Probability Study
Guide
OpenIntro Statistics Chapters 1–3 OpenIntro
_ Data, Summaries
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What is the primary focus of Chapter 1 in OpenIntro Statistics?
Introduction to data collection methods and conclusions that
can be drawn from them.
OpenIntro Statistics Chapters 1–3_ Data, Summaries, Probability.pdf
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What is a summary statistic?
A single number that summarizes many data values, such as a
proportion.
What does a data matrix represent?
Each row is a case (observational unit) and each column is a
variable.
OpenIntro Statistics Chapters 1–3_ Data, Summaries, Probability.pdf
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What are the two types of numerical variables?
Discrete (counts) and continuous (any value in a range).
OpenIntro Statistics Chapters 1–3_ Data, Summaries, Probability.pdf
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