Question: What are the units? Your data consist of observations on the weight gain over a four-week period of several subjects (measured in pounds) and the food intake of these subjects (measured in calories). In what units are each of the following descriptive statistics measured?
(a) The mean food intake of the subjects.
(b) The standard deviation of the subjects' weight gains.
(c) The correlation between weight gain and food intake.
(d) The median food intake of the subjects.