Scatterplots

Front

What is a scatterplot?

Back

A scatterplot is a graph that displays values for typically two variables for a set of data. Each point represents an observation in the dataset.

Front

What does a linear relationship in a scatterplot indicate?

Back

A linear relationship indicates that as one variable increases or decreases, the other variable tends to do the same in a consistent manner.

Front

What is positive correlation in a scatterplot?

Back

Positive correlation means that as one variable increases, the other variable also increases.

Front

What is negative correlation in a scatterplot?

Back

Negative correlation means that as one variable increases, the other variable decreases.

Front

What does no correlation mean in a scatterplot?

Back

No correlation means there is no apparent relationship between the two variables; changes in one do not affect the other.

Front

How can you identify a strong positive correlation in a scatterplot?

Back

A strong positive correlation is identified when the points on the scatterplot are closely clustered around a straight line that slopes upwards.

Front

How can you identify a strong negative correlation in a scatterplot?

Back

A strong negative correlation is identified when the points on the scatterplot are closely clustered around a straight line that slopes downwards.

Front

What does a weak correlation look like in a scatterplot?

Back

A weak correlation appears when the points are more spread out and do not closely follow a straight line.

Front

What is the relationship between temperature and ice cream sales?

Back

There is a positive correlation; as temperature increases, ice cream sales tend to increase.

Front

What is the relationship between temperature and the number of people wearing jackets?

Back

There is a negative correlation; as temperature decreases, the number of people wearing jackets tends to increase.