Scatter Plots

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 a positive association in a scatter plot 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 scatter plot indicate?

Back

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

Front

What does no association mean in a scatter plot?

Back

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

Front

How can you identify a linear relationship in a scatter plot?

Back

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

Front

What is correlation in the context of scatter plots?

Back

Correlation refers to the strength and direction of a relationship between two variables, which can be positive, negative, or none.

Front

What does a correlation coefficient of 0 indicate?

Back

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

Front

If a scatter plot shows that as x increases, y decreases, what type of correlation is present?

Back

This indicates a negative correlation.

Front

What is the purpose of analyzing scatter plots?

Back

Analyzing scatter plots helps to identify relationships, trends, and patterns between two variables.

Front

What is an example of a positive association?

Back

An example of a positive association is the relationship between study time and test scores; as study time increases, test scores tend to increase.