Scatter Plots and Association

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 grid.

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 is a linear relationship in a scatter plot?

Back

A linear relationship is when the data points can be approximated by a straight line.

Front

What is a non-linear relationship in a scatter plot?

Back

A non-linear relationship is when the data points do not follow a straight line and may curve or cluster in a different pattern.

Front

How can you determine the strength of an association in a scatter plot?

Back

The strength of an association can be determined by how closely the data points cluster around a line; tighter clusters indicate a stronger association.

Front

What does it mean if there is no association in a scatter plot?

Back

No association means that there is no discernible relationship between the two variables; the data points are scattered randomly.

Front

What is correlation?

Back

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

Front

What is the difference between correlation and causation?

Back

Correlation indicates a relationship between two variables, while causation implies that one variable directly affects the other.

Front

What is the purpose of using scatter plots in data analysis?

Back

Scatter plots are used to visually assess the relationship between two variables and to identify trends, patterns, or outliers.