Scatterplots

Front

What is a scatterplot?

Back

A scatterplot is a graphical representation of two variables, showing the relationship between them using points on a Cartesian plane.

Front

What does a positive linear association in a scatterplot 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 in a scatterplot indicate?

Back

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

Front

What is a nonlinear association in a scatterplot?

Back

A nonlinear association occurs when the relationship between the variables cannot be accurately represented by a straight line.

Front

What does 'no association' mean in the context of 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

How can you identify a positive correlation in a scatterplot?

Back

A positive correlation is identified when the points on the scatterplot trend upwards from left to right.

Front

How can you identify a negative correlation in a scatterplot?

Back

A negative correlation is identified when the points on the scatterplot trend downwards from left to right.

Front

What is the purpose of a trend line in a scatterplot?

Back

A trend line helps to summarize the relationship between the variables and can be used to make predictions.

Front

If the temperature increases, what is the expected effect on the number of layers worn?

Back

The expected effect is a decrease in the number of layers worn, indicating a negative correlation.

Front

How can you estimate values from a scatterplot?

Back

You can estimate values by locating the corresponding point on the trend line for a given input value.