Scatterplots-Correlation & Best Fit Lines

Front

What is a scatterplot?

Back

A scatterplot is a graph that shows the relationship between two variables by displaying data points on a two-dimensional axis.

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What does a line of best fit represent in a scatterplot?

Back

A line of best fit is a straight line that best represents the data points in a scatterplot, indicating the trend of the data.

Front

What is correlation in statistics?

Back

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

Front

What are the types of correlation?

Back

The types of correlation are positive correlation, negative correlation, and no correlation.

Front

What does positive correlation mean?

Back

Positive correlation means that as one variable increases, the other variable also increases.

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What does negative correlation mean?

Back

Negative correlation means that as one variable increases, the other variable decreases.

Front

What does no correlation mean?

Back

No correlation means that there is no predictable relationship between the two variables.

Front

How can you identify a positive correlation in a scatterplot?

Back

A positive correlation is identified when the data points slope upwards from left to right.

Front

How can you identify a negative correlation in a scatterplot?

Back

A negative correlation is identified when the data points slope downwards from left to right.

Front

What is the purpose of using a trend line in a scatterplot?

Back

The purpose of a trend line is to summarize the relationship between the variables and to make predictions.