DEC 2019 Q5

QUESTION 5 The following table shows the average daily walking distance (km) and weight loss (kg) of eight university students in a month. It is believed that more weight loss can be obtained by having a long walk. Walking distance (km) Weight loss (kg) 6 8 4 W O 2 0.5 1 3 ANUN- 1.5 1 a) State the independent and dependent variables. (2 marks) b) Calculate the Pearson's product-moment correlation coefficient and comment on the value obtained. (5 marks) c) Calculate the coefficient of determination and explain its meaning. (2 marks) d) Find the linear regression equation using the least square method. (5 marks) e) Explain the meaning of the slope obtained in (d). (1 mark)

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