Why is a random variable said to be random- indicate


1. Why is a random variable said to be "random"?

2. Indicate whether each of the following random variables is discrete or continuous.

a. The diameter of aluminum rods coming off a production line

b. The number of years of schooling employees have completed

c. The Dow Jones Industrial Average

d. The volume of milk purchased during a supermarket visit.

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Basic Statistics: Why is a random variable said to be random- indicate
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