Question 4 tandardize (create Z-scores ) for both X scores and Y scores (for any study ), and then compute a of best fit using the standardized scores , what does the slope become ? becomes a statistic has what kind of units associated with it? Question 5 he following correlations "r" between X and Y, compute the percent of variance in Y explained by X, percent of variance in Y NOT explained by X. n % of Y Explained by X % of Y Not Explained by X 12 = 12 = 12 = 12 = 12 = 12 = 12 = 12 = 12 = sign (positive or negative ) of a correlation actually tell us