Learn more about using frequency tables and line plots.
Grades 6 through 8 Material from CK-12Preview Assign
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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.
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.
Display numerical data in plots on a number line, including dot plots, histograms, and box plots.