SOL Objective(s):
8.13 The student will
a) make comparisons, predictions, and inferences, using information displayed in graphs; and
b) construct and analyze scatterplots.
a) make comparisons, predictions, and inferences, using information displayed in graphs; and
b) construct and analyze scatterplots.
The Basics and Background Information
• Comparisons, predictions, and inferences are made by examining characteristics of a data set displayed in a variety of graphical representations to draw conclusions.
• The information displayed in different graphs may be examined to determine how data are or are not related, ascertaining differences between characteristics (comparisons), trends that suggest what new data might be like (predictions), and/or “what could happen if” (inferences).
• A scatterplot illustrates the relationship between two sets of data. A scatterplot consists of points. The coordinates of the point represent the measures of the
two attributes of the point.
• Scatterplots can be used to predict trends and estimate a line of best fit.
• In a scatterplot, each point is represented by an independent and dependent variable. The independent variable is graphed on the horizontal axis and the dependent is graphed on the vertical axis.
• The information displayed in different graphs may be examined to determine how data are or are not related, ascertaining differences between characteristics (comparisons), trends that suggest what new data might be like (predictions), and/or “what could happen if” (inferences).
• A scatterplot illustrates the relationship between two sets of data. A scatterplot consists of points. The coordinates of the point represent the measures of the
two attributes of the point.
• Scatterplots can be used to predict trends and estimate a line of best fit.
• In a scatterplot, each point is represented by an independent and dependent variable. The independent variable is graphed on the horizontal axis and the dependent is graphed on the vertical axis.
Essential Knowledge and Skills
The student will use problem solving, mathematical communication, mathematical reasoning, connections, and representations to...
• Collect, organize, and interpret a data set of no more than 20 items using scatterplots. Predict from the trend an estimate of the line of best fit with a drawing.
• Interpret a set of data points in a scatterplot as having a positive relationship, a negative relationship, or no relationship.
• Collect, organize, and interpret a data set of no more than 20 items using scatterplots. Predict from the trend an estimate of the line of best fit with a drawing.
• Interpret a set of data points in a scatterplot as having a positive relationship, a negative relationship, or no relationship.
Vocabulary and Things to Know:

Be Able To:

The topic: What is it and what will we learn?
In life, not everything happens in a perfect pattern. Scatter plots show data and trends or patterns of data. Inferences can be made based on data of occurances and scatter plots can help in making predictions based on known/given data.
Scatter PlotsLesson that incorporates independent variables and dependent variables terms, along with steps of how to make scatter plots.


Scatter Plots and Line of Best FitThis is a middle school math lesson with vocabulary and examples.


Introduction to CorrelationsVocabulary and examples are given.


Scatter Plot WorksheetInteractive online worksheet where answers can be checked.
