ABSTRACT
The heights of adult men form a normal frequency distribution, i.e., a symmetrical distribution with one mode (unimodal). A similar population is formed by the heights of adult women. The mode is the score that occurs most often in a frequency distribution of data. However, because on the average women are shorter than men, the mean of the population of women’s heights is less than the mean height of men. The mean is the score that indicates the average of all the scores in a frequency distribution. Imagine that a random sample of adults is chosen and the height of each person is determined. The sample consists of both men and women. In what way will the sample reflect the fact that it was drawn from a combination of two different populations?
