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Understanding Relationships Between Two Variables in Scatterplots

Scatterplots are valuable tools for visualizing the relationship between two variables. They represent data points as ordered pairs on a coordinate plane, revealing patterns that help us understand how one variable affects another. Relationships can be classified as positive, negative, or nonexistent. A positive relationship indicates that as one variable increases, so does the other; a negative relationship suggests that as one variable increases, the other decreases; and no relationship signals an absence of a discernible pattern. This guide provides practice problems and strategies for analyzing scatterplots effectively.

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Understanding Relationships Between Two Variables in Scatterplots

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  1. EQ1: What generalizations can be made about the relationship between two variables in scatterplots? 13.01 Notes & Vocabulary Practice Problems: p.42-43 CYU Homework: p.44 #11-12 Answer EQ1 in writing 13.02 13.03 13.04

  2. Scatter Plots 13.01 • A scatter plot shows the relationship between a set of data with two variables, graphed as ordered pairs on a coordinate plane. • Scatterplots may be described by the type of relationship: • Positive relationship – when x increases, y increases • Negative relationship – when x increases, y decreases • No relationship – no obvious pattern

  3. Classwork: Practice 13.02 • Practice Problems: p.42-43 #1-10

  4. Homework 13.03 • p.44 • #11-12 • Complete HW on provided paper. • Homework will be collected!

  5. Answer to EQ1 13.04 • Rewrite EQ1 • Begin response with “I can generalize relationships between two variables by…” • Provide an example of each strategy learned. • Provide a clear explanation of each strategy to go with each example. • Use complete sentences. • Use your vocabulary words.

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