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Below is a table showing population age group projections made
Below is a table showing population age group projections made by the US Census Bureau for the year 2025

Age Group Number of People (millions)

0 to under 20………….. 94.3

20 to under 40………… 92.9

40 to under 60…………….. 85.0

60 to under 80……….. 70.3

80 to under 100………… 14.8

100 to 120………….. .1

Total = 357.4

a. Convert the frequency table to a relative frequency table.

b. Use the relative frequency table to approximate the mean, variance and standard deviation for the age data represented.

Below is a table showing population age group projections made

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