_________ error is associated with a poor reliability problem and _____________ error is a measurement validity problem. _________ error affects the average, but ________ error has no effect on the average - it only affects the variability or precision around the average. Group of answer choices a. Systematic, Random; Systematic, Random b. Random; Systematic; Systematic, Random c. Random; Systematic; Random; Systematic d. Systematic, Random; Random; Systematic