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Test Yourself

True or False

Indicate whether the following statements about scatter plots are true or false.

Question 1

The points on a scatter plot can only represent individual observations.

Question 2

Scatter plots can be used to show the distribution of one continuous variable.

Question 3

Scatter plots allow you to visualise the relationship between two variables, see the direction of the relationship, get a feeling for the strength of the relationship and assess the shape of a relationship.

Question 4

Scatter plots can be used to check for outliers.

Question 5

A correlation coefficient takes values from 0 to 1.

Question 6

A correlation coefficient measures the strength of association between two continuous variables.

Question 7

We would get a different correlation coefficient if we changed the units of each variable because in doing so we would change the slope of the relationship and the correlation coefficient captures how steep this slope is.