Front

What is a scatterplot?

Back

A scatterplot is a graphical representation of two variables, showing the relationship between them using points on a Cartesian plane.

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What does a trend line in a scatterplot represent?

Back

A trend line is a straight or curved line that best represents the data points in a scatterplot, indicating the general direction of the relationship between the variables.

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What is a linear relationship in a scatterplot?

Back

A linear relationship is when the data points in a scatterplot can be approximated by a straight line, indicating a constant rate of change between the variables.

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What is a non-linear relationship in a scatterplot?

Back

A non-linear relationship occurs when the data points do not form a straight line, indicating that the rate of change between the variables varies.

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How can you identify a strong association in a scatterplot?

Back

A strong association is indicated by data points that are closely clustered around a trend line, showing a clear relationship between the variables.

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What does it mean if a scatterplot has a weak association?

Back

A weak association is indicated by data points that are widely scattered and do not closely follow a trend line, suggesting little to no relationship between the variables.

Front

What is the purpose of using scatterplots in data analysis?

Back

Scatterplots are used to visually assess the relationship between two quantitative variables, helping to identify trends, correlations, and potential outliers.

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What is correlation in the context of scatterplots?

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Correlation refers to the strength and direction of a linear relationship between two variables, which can be positive, negative, or zero.

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What does a positive correlation look like in a scatterplot?

Back

A positive correlation is represented by data points that rise from left to right, indicating that as one variable increases, the other variable also increases.

Front

What does a negative correlation look like in a scatterplot?

Back

A negative correlation is represented by data points that fall from left to right, indicating that as one variable increases, the other variable decreases.