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9 10 3 5 6 12 13 Which of the following variables are best thought of as continuous, which discrete? Indicate your choice for
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(a) Discrete variable. Since each grade is a distinct and non-overlapping identity where at a certain point of time a high school dropout can have the highest grade as a single number assigned to it, for eg. (9,10,11).

(b) Discrete variable. Since the number of children in a household is a countably finite distinct or isolated quantity that takes only positive integers as its value and is obtained by counting.

(c) Discrete variable. Since we can distinctly count the no. of damaged cell at a particular instance.

(d) Continuous variable.Since time is a continuous variable as it assumes an infinite number of points at a particular instance.

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