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

Front

What is the purpose of using scatter plots?

Back

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

Front

What is a linear association?

Back

A linear association is a relationship between two variables that can be represented by a straight line on a scatter plot.

Front

What is a non-linear association?

Back

A non-linear association is a relationship between two variables that cannot be accurately represented by a straight line; it may curve or change direction.

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 stronger associations.

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 equation of a line in slope-intercept form?

Back

The equation of a line in slope-intercept form is y = mx + b, where m is the slope and b is the y-intercept.