Making Predictions From Trendlines

Front

What is a trendline?

Back

A trendline is a line that is drawn on a graph to show the general direction or trend of a set of data points.

Front

What is the purpose of a line of best fit?

Back

The line of best fit is used to make predictions based on the data points in a scatterplot.

Front

How can you use a trendline to make predictions?

Back

You can extend the trendline to estimate values for data points that are not explicitly shown on the graph.

Front

What does a positive linear association indicate?

Back

A positive linear association indicates that as one variable increases, the other variable also tends to increase.

Front

What does a negative linear association indicate?

Back

A negative linear association indicates that as one variable increases, the other variable tends to decrease.

Front

What is a scatterplot?

Back

A scatterplot is a graph that displays values for typically two variables for a set of data.

Front

What does it mean if there is no association between two variables?

Back

No association means that changes in one variable do not affect the other variable.

Front

How do you determine the balance remaining on a loan from a graph?

Back

You find the point on the graph that corresponds to the number of payments made and read the balance from the y-axis.

Front

What is the significance of the x-axis in a trendline graph?

Back

The x-axis typically represents the independent variable, which is the variable you control or change.

Front

What is the significance of the y-axis in a trendline graph?

Back

The y-axis typically represents the dependent variable, which is the variable that responds to changes in the independent variable.