Scatter Plots and Associations Test Review

Front

What is a scatter plot?

Back

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

Front

What does it mean if a scatter plot has no association?

Back

It means that the ordered pairs in the scatter plot do not show any predictable pattern or correlation.

Front

What is a positive association in a scatter plot?

Back

A positive association occurs when, as one variable increases, the other variable also increases, resulting in an upward trend.

Front

What is a negative association in a scatter plot?

Back

A negative association occurs when, as one variable increases, the other variable decreases, resulting in a downward trend.

Front

What does a slope represent in a scatter plot?

Back

The slope represents the direction and steepness of the relationship between the two variables.

Front

What is the correlation coefficient?

Back

The correlation coefficient is a numerical measure of the strength and direction of a linear relationship between two variables, ranging from -1 to 1.

Front

What does a correlation coefficient of 0 indicate?

Back

A correlation coefficient of 0 indicates no linear relationship between the two variables.

Front

How can you determine if a scatter plot has a strong association?

Back

A scatter plot has a strong association if the data points are closely clustered around a line or curve.

Front

What is an example of a situation with a negative association?

Back

An example is the relationship between the number of layers of clothing a person wears and the temperature outside.

Front

What is an example of a situation with a positive association?

Back

An example is the relationship between the temperature and the number of visitors at a beach.