Suppose the number of married men (in thousands) between the ages of 20 and 44 in the United States in a certain year is given in the following table.
Age 20-24 25-29 30-34 35-39 40-44
Men 1292 4119 6275 7518 7673
Find the mean and the standard deviation of the given data. Hint: Assume that all ages lying within a group interval take the middle value of that group. (Round your answers to two decimal places.)
standard deviation ? yr
Mean of the grouped data: X ¯... View the full answer