QUESTION 2 An epidemiologist attempts to predict the weight of an elderly person

Question

QUESTION 2 An epidemiologist attempts to predict the weight of an elderly person from demispan. She randomly chooses 70 elderly subjects in a particular geographic area an records their weight and demispan measurements in the form of (e, yi) for i····70 Given that the value of the Pearson correlation coefficient is zero, what can be deduced? O 1 There is no relation between weight and demispan O 2 There ts an almost perfect relationship between weight and demispan O 3 There could be some nonlinear relationship between weight and demispan O4 There is a strong negative relationship between weight and demispan O 5 All pairs of values of weight and demispan are practically identical

Explanation / Answer

There are 3 ways in which pearson correlation coefficient could be interpreted:

Therefore 1) is the correct option here.

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