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Skills available for North Dakota eighth-grade math standards

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8.NS The Number System

8.EE Expressions and Equations

8.F Functions

8.G Geometry

8.SP Statistics and Probability

  • Investigate patterns of association in bivariate data.

    • 8.SP.1.i Construct and interpret scatter plots for bivariate measurement data to investigate patterns of association between two quantities.

    • 8.SP.1.ii Describe patterns such as clustering, outliers, positive or negative association, linear association, and nonlinear association.

    • 8.SP.2.i Know that straight lines are widely used to model relationships between two quantitative variables.

    • 8.SP.2.ii 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.3 Use the equation of a linear model to solve problems in the context of bivariate measurement data, interpreting the slope and intercept(s).

    • 8.SP.4.i Understand that patterns of association can also be seen in bivariate categorical data by displaying frequencies and relative frequencies in a two-way table.

    • 8.SP.4.ii Construct and interpret a two-way table summarizing data on two categorical variables collected from the same subjects.

    • 8.SP.4.iii Use relative frequencies calculated for rows or columns to describe possible association between the two variables.