Learn on PengiPengi Math (Grade 8)Chapter 8: Data Analysis and Displays

Lesson 1: Scatter Plots and Bivariate Data

In this Grade 8 Pengi Math lesson from Chapter 8: Data Analysis and Displays, students learn to define bivariate data, organize paired data into tables, and construct scatter plots by plotting ordered pairs on a coordinate plane. The lesson covers choosing appropriate axis scales and understanding how scatter plots reveal relationships between two quantities.

Section 1

Understanding Scatter Plots and Bivariate Data

Property

Bivariate data consists of pairs of values for two different variables. A scatter plot is a graph that displays these pairs of data as points (x,y)(x, y) on a coordinate plane to show the relationship between the two variables.

Examples

Section 2

Procedure: Plotting Points on a Scatter Plot

Property

A scatter plot is constructed by converting two-variable data into ordered pairs (x,y)(x, y) where xx represents the first variable and yy represents the second variable, then plotting these points on a coordinate plane with appropriate scales.

Examples

Book overview

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Chapter 8: Data Analysis and Displays

  1. Lesson 1Current

    Lesson 1: Scatter Plots and Bivariate Data

  2. Lesson 2

    Lesson 2: Analyzing Patterns and Associations

  3. Lesson 3

    Lesson 3: Trend Lines and Linear Models

  4. Lesson 4

    Lesson 4: Interpreting Linear Models and Predictions

  5. Lesson 5

    Lesson 5: Two-Way Tables and Categorical Data

Lesson overview

Expand to review the lesson summary and core properties.

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Section 1

Understanding Scatter Plots and Bivariate Data

Property

Bivariate data consists of pairs of values for two different variables. A scatter plot is a graph that displays these pairs of data as points (x,y)(x, y) on a coordinate plane to show the relationship between the two variables.

Examples

Section 2

Procedure: Plotting Points on a Scatter Plot

Property

A scatter plot is constructed by converting two-variable data into ordered pairs (x,y)(x, y) where xx represents the first variable and yy represents the second variable, then plotting these points on a coordinate plane with appropriate scales.

Examples

Book overview

Jump across lessons in the current chapter without opening the full course modal.

Continue this chapter

Chapter 8: Data Analysis and Displays

  1. Lesson 1Current

    Lesson 1: Scatter Plots and Bivariate Data

  2. Lesson 2

    Lesson 2: Analyzing Patterns and Associations

  3. Lesson 3

    Lesson 3: Trend Lines and Linear Models

  4. Lesson 4

    Lesson 4: Interpreting Linear Models and Predictions

  5. Lesson 5

    Lesson 5: Two-Way Tables and Categorical Data