Scatterplots - Identify association

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.

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What does a positive correlation in a scatterplot indicate?

Back

A positive correlation indicates that as one variable increases, the other variable also increases.

Front

What does a negative correlation in a scatterplot indicate?

Back

A negative correlation indicates that as one variable increases, the other variable decreases.

Front

What does no correlation mean in a scatterplot?

Back

No correlation means there is no apparent relationship between the two variables; changes in one variable do not predict changes in the other.

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How can you identify a linear relationship in a scatterplot?

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A linear relationship can be identified if the points in the scatterplot form a straight line or a pattern that closely resembles a straight line.

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What is the purpose of analyzing scatterplots?

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The purpose is to identify relationships between two variables, such as correlation and trends.

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What type of correlation is shown if the points slope downwards from left to right?

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This indicates a negative correlation.

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What type of correlation is shown if the points slope upwards from left to right?

Back

This indicates a positive correlation.

Front

In a scatterplot, what does it mean if the points are widely scattered?

Back

Widely scattered points suggest a weak correlation between the variables.

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What is an example of a positive correlation in real life?

Back

An example is the relationship between study time and test scores; generally, more study time leads to higher test scores.