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# Grade 8: Statistics and Probability235 questions13 skills

## 8.SP.A.1

74 questions4 skills
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

22 questions1 skill
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

45 questions3 skills
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

94 questions5 skills
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.