The following data represent the age of the mother at childbirth for 1980 and 2007. (a) Approximate
Question:
(a) Approximate the population mean and standard deviation of age for mothers in 1980.
(b) Approximate the population mean and standard deviation of age for mothers in 2007.
(c) Which year has the higher mean age?
(d) Which year has more dispersion in age?
Transcribed Image Text:
1980 Births (thousands) 2007 Births (thousands) 10-14 15-19 20-24 25-29 30-34 35-39 40 44 45-49 9.8 551.9 1226.4 1108.2 549.9 40.7 23.2 7.0 488.5 1172.1 1298.2 1035.3 544.0 116.6 7.3
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a 1980 We organize our computations of x i f i x i f i and x i 2 f i in the following table Wit...View the full answer
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