14. The standard deviation measures the standard, or typical, distance from the mean. For each of the fol- lowing two populations, you should be able to use this definition to determine the standard deviation without doing any serious calculations. (Hint: Find the mean for each population, and then look at the distances. between the individual scores and the mean.)

a. Population 1: 5, 5, 5, 5

b. Population 2: 4, 6, 4, 6