Unit 8: Scatterplots and Associations

Front

What is a scatterplot?

Back

A scatterplot is a graph that shows the relationship between two quantitative variables by displaying data points on a two-dimensional axis.

Front

What does a positive association in a scatterplot indicate?

Back

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

Front

What does a negative association in a scatterplot indicate?

Back

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

Front

What does it mean if a scatterplot shows no relationship?

Back

It means that there is no discernible pattern or correlation between the two variables being plotted.

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 scatterplot, showing the general direction of the data points.

Front

How can you identify a linear relationship in a scatterplot?

Back

A linear relationship can be identified if the data points form a straight line or a pattern that closely resembles a straight line.

Front

What is a non-linear relationship?

Back

A non-linear relationship is when the data points do not form a straight line and may curve or have a different pattern.

Front

What does it mean if a scatterplot is described as 'linear and positive'?

Back

It means that the data points form a straight line that slopes upwards, indicating that both variables increase together.

Front

What does it mean if a scatterplot is described as 'linear and negative'?

Back

It means that the data points form a straight line that slopes downwards, indicating that as one variable increases, the other decreases.

Front

What is the purpose of analyzing scatterplots?

Back

The purpose is to determine the type of relationship between two variables, which can help in making predictions.