AP Statistics Linear Regression Review

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What is Linear Regression?

Back

A statistical method used to model the relationship between a dependent variable and one or more independent variables by fitting a linear equation to observed data.

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What is a Response Variable?

Back

The variable that is being predicted or explained in a study, often denoted as 'Y'.

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What is an Explanatory Variable?

Back

The variable that is used to explain or predict the response variable, often denoted as 'X'.

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What is a Scatterplot?

Back

A graphical representation of the relationship between two quantitative variables, where each point represents an observation.

Front

What does the Slope (b) represent in Linear Regression?

Back

The slope indicates the change in the response variable for a one-unit change in the explanatory variable.

Front

What is Correlation Coefficient (r)?

Back

A statistical measure that describes the strength and direction of a linear relationship between two variables, ranging from -1 to 1.

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What is an Outlier?

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A data point that differs significantly from other observations in a dataset, potentially indicating variability or error.

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What is a Leverage Point?

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A data point that has a significant effect on the slope of the regression line due to its extreme value on the explanatory variable.

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What is an Influential Point?

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A data point that, if removed, would significantly change the result of the regression analysis.

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What does a Z-score represent?

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A Z-score indicates how many standard deviations an element is from the mean of the dataset.