3.5 Scatterplots Review #1- Grade 8

Front

What is a scatterplot?

Back

A scatterplot is a graph that displays values for typically two variables for a set of data. Each point represents an observation in the dataset.

Front

What does a positive association in a scatterplot indicate?

Back

A positive association indicates that as one variable increases, the other variable also tends to increase.

Front

What does a negative association in a scatterplot indicate?

Back

A negative association indicates that as one variable increases, the other variable tends to decrease.

Front

What does 'no association' mean in the context of scatterplots?

Back

'No association' means that there is no discernible relationship between the two variables; changes in one do not affect the other.

Front

What is a linear association?

Back

A linear association is a relationship between two variables that can be represented by a straight line on a scatterplot.

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What is a nonlinear association?

Back

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

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How can you determine the strength of a scatterplot's association?

Back

The strength of an association can be determined by how closely the points cluster around a line. Strong associations have points that are close to the line, while weak associations have points that are more spread out.

Front

What does a weak association look like on a scatterplot?

Back

A weak association appears when the points are widely scattered and do not closely follow a clear trend or line.

Front

What does a strong association look like on a scatterplot?

Back

A strong association appears when the points are closely clustered around a straight line, indicating a clear relationship between the variables.

Front

What is correlation in statistics?

Back

Correlation is a statistical measure that describes the extent to which two variables change together.