Within a population, the differences that exist from one person to another are often called diversity. Researchers comparing cognitive skills for younger adults and older adults typically find greater differences (greater diversity) in the older population (Morse, 1993). Following are typical data showing problem-solving scores for two groups of participants.

130 CHAPTER 4 Researchers comparing cognitive skills for younger adults and older adults typically find greater dif- ferences (greater diversity) in the older population (Morse, 1993). Following are typical data show- ing problem-solving scores for two groups of participants. Older Adults Younger Adults (average age 72) (average age 31) 94738 79678 62845 67668 75266 97869 a. Compute the mean, variance, and standard devia- tion for each group. b. Is one group of scores noticeably mom varinine (more diverse) than the other