Question: Question 3 Discuss briefly (giving several examples) the difference between correlation and causation. (6) Calculate the regression equation between the two variables in question 2

Question 3

  1. Discuss briefly (giving several examples) the difference between

correlation and causation. (6)

  1. Calculate the regression equation between the two variables in question 2 which will enable us to estimate how many years of education a woman

has had if we know her salary. (8)

  1. Predict how many years of education a woman who now earns R40 000 p.a. has had. Explain the assumptions (using a graph of the data) behind

the prediction. Why must we be very careful about extrapolation, in

general? (6) [20]

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