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.)

mean ?

yr

standard deviation ? yr

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Mean of the grouped data: X ¯... View the full answer

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Mean, x ¯ = Sum of number of men / Total number of age groups = 5375.40... View the full answer