Scatterplot flashcard review

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What is an explanatory variable?

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An explanatory variable is a variable that is manipulated or changed in an experiment to observe its effect on a response variable.

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CCSS.HSS.IC.B.3

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What is a response variable?

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A response variable is the outcome or effect that is measured in an experiment, which is influenced by the explanatory variable.

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CCSS.8.SP.A.4

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What does a positive linear association indicate in a scatterplot?

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A positive linear association indicates that as one variable increases, the other variable also increases, resulting in a straight line that slopes upwards.

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CCSS.HSS.ID.B.5

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What does a negative linear association indicate in a scatterplot?

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A negative linear association indicates that as one variable increases, the other variable decreases, resulting in a straight line that slopes downwards.

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CCSS.HSS.ID.B.5

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What is a nonlinear association?

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A nonlinear association occurs when the relationship between two variables cannot be accurately represented by a straight line; the relationship may curve or change direction.

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CCSS.HSS.ID.B.5

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How do you interpret a scatterplot?

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To interpret a scatterplot, look for patterns, trends, and associations between the two variables plotted on the x and y axes.

Tags

CCSS.8.SP.A.1

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What is the purpose of a scatterplot?

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A scatterplot is used to visually display the relationship between two quantitative variables, helping to identify correlations and trends.

Tags

CCSS.8.SP.A.1

Front

What does it mean if there is no association in a scatterplot?

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If there is no association in a scatterplot, it means that changes in one variable do not correspond to changes in the other variable; the points are scattered randomly.

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CCSS.HSS.ID.B.5

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What is the significance of outliers in a scatterplot?

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Outliers are data points that fall far from the trend of the rest of the data; they can significantly affect the correlation and interpretation of the data.

Tags

CCSS.8.SP.A.1

Front

What is the correlation coefficient?

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The correlation coefficient is a numerical measure that indicates the strength and direction of a linear relationship between two variables, ranging from -1 to 1.

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CCSS.HSS.ID.C.8