Drawing Lines of Best Fit to Make Predictions

Front

What is a line of best fit?

Back

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

Front

What is the purpose of drawing a line of best fit?

Back

To make predictions about values based on the trend shown in the data.

Front

What does it mean if a line of best fit does not pass through the origin?

Back

It indicates that the relationship between the variables does not start at zero.

Front

How can you determine if a line is a line of best fit?

Back

It should minimize the distance from all points in the data set.

Front

What is an outlier in a data set?

Back

A data point that differs significantly from other observations.

Front

How do you identify an outlier on a scatter plot?

Back

Look for points that are far away from the general cluster of data.

Front

What does a positive correlation in a scatter plot indicate?

Back

As one variable increases, the other variable also increases.

Front

What does a negative correlation in a scatter plot indicate?

Back

As one variable increases, the other variable decreases.

Front

What is the significance of the slope of a line of best fit?

Back

The slope indicates the rate of change between the two variables.

Front

What does it mean if a line of best fit is horizontal?

Back

It indicates no correlation between the variables; one does not affect the other.