Scatterplots

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 'no association' mean in a scatterplot?

Back

No association means that there is no discernible relationship between the two variables; changes in one do not affect the other.

Front

What is the difference between linear and nonlinear scatterplots?

Back

A linear scatterplot shows a straight-line relationship between variables, while a nonlinear scatterplot shows a curved or more complex relationship.

Front

How can you determine the correlation from a scatterplot?

Back

You can determine correlation by observing the direction and strength of the data points' clustering; closer clustering indicates stronger correlation.

Front

What is the purpose of using a scatterplot?

Back

The purpose of using a scatterplot is to visually represent the relationship between two variables and to identify trends or patterns.

Front

What does it mean if a scatterplot is scattered?

Back

If a scatterplot is scattered, it means that the data points are widely spread out, indicating little to no correlation between the variables.

Front

How do you interpret the slope of a line of best fit in a scatterplot?

Back

The slope of the line of best fit indicates the rate of change between the two variables; a positive slope means an increase, while a negative slope means a decrease.

Front

What is an outlier in a scatterplot?

Back

An outlier is a data point that significantly differs from the other points in the scatterplot, which can affect the overall interpretation of the data.