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What is mean age of 12 boys with an age range 8 to 10 years of age?
Wiki User
∙ 14y ago
There is not enough information to calculate an arithmetic mean. If the boys were exactly evenly split between the ages (4 who were 8, 4 who were 9 and 4 who were 10) then we could easily say the mean was 9.0.
Lacking information on the distribution of the ages, the context of the problem might offer guidance or we could simply conclude that the mean age was somewhere in the age range 8.0 to 10.0.
There is one extra detail that is missing. When (in most English-speaking countries) someone is referred to as an 8 year old, their actual age is within the range 8.000 (the 8th birthday) to about 8.997 (the day prior to the 9th birthday). So, when the problem says 8 to 10 years of age, is the author describing people from 8.000 to 10.000, or people from 8.000 to 10.997 years old? Small details like this aren't very relevant for adults but can create tricky misunderstandings in child development.
Wiki User
∙ 14y ago
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