Correlation and Causation

Maths

Bivariate data

Smoking causes lung cancer. What kind of correlation would you expect to see?

There is no causal relationship between higher pet ownership and reading

There is a positive correlation between the number of pets people own, and the number of books people read. Which of these statements is most likely to be true?

What correlation would you expect to see between the variables weekly salary and amount spent on food per week?

A higher amount of money spent on food causes a higher salary

A higher amount of money spent on food causes a lower salary

A higher salary causes a higher amount of money spent on food

A higher salary causes a lower amount of money spent on food

Which of the following statements is most likely to be true?

Which of the following is the most appropriate line of best fit for the data?

It would be unreliable to make an estimate

The scatter graph below shows the shoe size and height of different secondary students. If a student had a shoe size of 6, what would you expect their height to be?

Someone who is 190cm tall would have a shoe size of 13

The shorter you are, the smaller your feet are likely to be.

There is a positive correlation between shoe size and height

Thinking about the scatter graph above, which of the statements would you agree with the LEAST? Select one.

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