4.5 Scatter Plots and Line of Fit

Front

What is a scatter plot?

Back

A scatter plot is a graph that shows the relationship between two 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 an outlier in a scatter plot?

Back

An outlier is a data point that is significantly different from other points in the dataset, often lying far away from the trend.

Front

How can you identify an outlier in a scatter plot?

Back

An outlier can be identified as a point that does not follow the general pattern of the other points.

Front

What is a line of best fit?

Back

A line of best fit is a straight line that best represents the data on a scatter plot, used to make predictions.

Front

How do you use a line of best fit to make predictions?

Back

You can use the line of best fit to estimate the value of one variable based on the value of another variable.

Front

What does it mean if a scatter plot shows no relationship?

Back

If a scatter plot shows no relationship, it means that changes in one variable do not affect the other variable.

Front

What is the purpose of using a trend line in a scatter plot?

Back

The purpose of a trend line is to summarize the data and help visualize the overall direction of the relationship.