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Consider the quantitative variable “Children” which represents the number of children in a family. Which of the following is correct regarding the variable “Children”?
ANSWER:
Children is a ratio variable.
This is correct. The variable Children is a ratio variable since Children = 0 does represent the absence of the quantity – the family has no children. Also it makes sense to talk about ratios; if family X has 4 children and family Y is 2 children, it is meaningful to say that family X has (4/2=2) twice as many children as family Y.