A correlation coefficient merely investigates the presence, strength, and direction of a linear relationship between two variables. True False A researcher must work with a number of of the various levels of the dependent variable paired with different levels of the independent variable to compute a (intercept) and b (slope). observations errors small samples large samples Standardized betas indicate the relative importance of alternative predictor variables. True False Multiple R ranges from and represents the amount of the dependent variable "explained," or accounted for, by the combined independent variables. 1.0 to +1.0 0 to +10 1 to 100 0 to +1.0