In: Statistics and Probability
A researcher wants to determine the association between two continuous variables, X and Y. A sample of 100 individuals were taken from a population where the values of X and Y were measured from each individual.
a) The correlation coefficient of X and Y were calculated from this sample and the value is 0.2, what is the implication of this value?
b) What may go wrong if the researcher concludes on the association between variables X and Y based on only the correlation coefficient?
c) What should the researcher do to avoid the mistake that might occur in part(b)?