Scatter Plots

Front

What is a scatter plot?

Back

A graph that shows the relationship of two data sets.

Front

What type of correlation is shown in a scatter plot where both x and y values increase together?

Back

Positive correlation.

Front

What does it mean when we say 'As x increases, y increases'?

Back

This indicates a positive correlation between the two variables.

Front

In a scatter plot with a negative correlation, what happens to y as x increases?

Back

As x increases, y decreases.

Front

What type of association does a scatter plot with a downward trend have?

Back

Negative association.

Front

What is the correlation coefficient?

Back

A numerical measure of the strength and direction of a relationship between two variables.

Front

What does a correlation coefficient of +1 indicate?

Back

A perfect positive correlation.

Front

What does a correlation coefficient of -1 indicate?

Back

A perfect negative correlation.

Front

What does a correlation coefficient of 0 indicate?

Back

No correlation between the variables.

Front

What is the purpose of a scatter plot?

Back

To visually display the relationship between two quantitative variables.