Topics
11. Bivariate Data
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United States of America
Grade 8

Topic Review: Bivariate data

Lesson
Practice

Introduction

We've just finished the chapter on Bivariate data. Let's do a review to ensure we have mastered each topic.

Bivariate data

In this chapter we covered the following topics:

  •  Identify dependent and independent variables 
  •  Scatter plots 
  •  Lines of best fit 
  •  Problem solving with linear models 
  •  Interpret data with two-way tables 

Outcomes

8.SP.A.1

Construct and interpret scatter plots for bivariate measurement data to investigate patterns of association between two quantities. Describe patterns such as clustering, outliers, positive or negative association, linear association, and nonlinear association.

8.SP.A.2

Know that straight lines are widely used to model relationships between two quantitative variables. For scatter plots that suggest a linear association, informally fit a straight line, and informally assess the model fit by judging the closeness of the data points to the line.

8.SP.A.3

Use the equation of a linear model to solve problems in the context of bivariate measurement data, interpreting the slope and intercept

8.SP.A.4

Understand that patterns of association can also be seen in bivariate categorical data by displaying frequencies and relative frequencies in a two-way table. Construct and interpret a two-way table summarizing data on two categorical variables collected from the same subjects. Use relative frequencies calculated for rows or columns to describe possible association between the two variables.

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