Can you compare two different systems such as heights of people (in units of inches) with weights of people (in units of pounds) in statistics? By using what measure of statistics? (In other words, can you compare mangos with guavas?) Can this measure be negative? Assumption: The two systems are described by approximately normal distributions. Group of answer choices Yes. z-score. Yes, z-score can be negative Yes. z-score. No, z-score cannot be negative Yes. Mean. Yes, mean can be negative No. Nothing. Doesn't apply