Describing and Interpreting Scatter Plots Practice

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 linear association in a scatter plot indicate?

Back

A positive linear 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 nonlinear association?

Back

A nonlinear association occurs when the relationship between two variables cannot be accurately represented by a straight line.

Front

What is the line of best fit?

Back

The line of best fit is a straight line that best represents the data on a scatter plot, showing the general direction of the relationship between the variables.

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; changes in one variable do not affect the other.

Front

What is a correlation coefficient?

Back

The correlation coefficient is a numerical measure that indicates the strength and direction of a linear relationship between two variables.

Front

What is positive correlation?

Back

Positive correlation occurs when both variables increase or decrease together, indicating a direct relationship.

Front

What is negative correlation?

Back

Negative correlation occurs when one variable increases while the other decreases, indicating an inverse relationship.

Front

How can you determine the type of association from a scatter plot?

Back

You can determine the type of association by observing the pattern of the data points: upward slope for positive, downward slope for negative, and no clear pattern for no association.