Making Predictions From Trendlines

Front

What is a trendline?

Back

A trendline is a line that is drawn on a scatter plot to represent the general direction of the data points.

Front

What does the line of best fit indicate?

Back

The line of best fit indicates the overall trend in the data, helping to make predictions based on the relationship between variables.

Front

How do you determine the line of best fit?

Back

The line of best fit is determined by minimizing the distance between the data points and the line, often using methods like least squares.

Front

What is a positive linear association?

Back

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

Front

What is a negative linear association?

Back

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

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 can you use a scatter plot to make predictions?

Back

You can use a scatter plot to make predictions by identifying the trendline and using it to estimate values for one variable based on another.

Front

What is the purpose of using a scatter plot?

Back

A scatter plot is used to visualize the relationship between two quantitative variables.

Front

What is interpolation in the context of trendlines?

Back

Interpolation is estimating a value within the range of the data points using the trendline.

Front

What is extrapolation in the context of trendlines?

Back

Extrapolation is estimating a value outside the range of the data points using the trendline.