For a class project Justin conducts a study to find out if there is a correlation between religiosity and generosity. He gives surveys that measure religiosity and generosity to members of his weekly Bible study group, When he calculates the correlation between religiosity and generosity he is surprised to find only a very week correlation (r = .04). Assuming there is at least a moderate positive relationship between religiosity and generosity, what most plausibly accounts for him finding such a week correlation. He did not account for the possibility of a curvilinear relationship. There is a restriction of range on religiosity in his sample There are a few outliers who are very high on both religiosity and generosity. He has failed to account for a third variable