Scatter Plots and Lines of Best Fit

Front

What do you call when most of the data is located in a certain area on a graph?

Back

Cluster

Front

What is a line of best fit used for?

Back

To make predictions

Front

Identify any clusters in a scatter plot.

Back

A cluster is a group of data points that are close together. For example, a cluster at x = 14.

Front

What does a line of best fit represent in a scatter plot?

Back

It represents the trend of the data points and helps in making predictions.

Front

How do you determine the line of best fit?

Back

The line of best fit is determined by drawing a line that has approximately equal numbers of points above and below it.

Front

What is a scatter plot?

Back

A scatter plot is a graph that shows the relationship between two variables using dots to represent data points.

Front

What does a positive correlation in a scatter plot indicate?

Back

It indicates that as one variable increases, the other variable also tends to increase.

Front

What does a negative correlation in a scatter plot indicate?

Back

It indicates that as one variable increases, the other variable tends to decrease.

Front

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

Back

The purpose is to summarize the relationship between the variables and to make predictions.

Front

How can you use a scatter plot to make predictions?

Back

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