Researchers are concerned that the weight of the average american school child is increasing implying, among other things, that children's clothing should be manufactured and marketed in larger sizes. if x is the weight of school children sampled in a nationwide study, then x is an example of:

A continuous random variable

Explanation:

Continuous Random Variable (VAC) is one that can take any numeric value within a given range or collection of ranges. That is, between any of two neighboring elements there are infinite intermediate quantities, dependent on the sensitivity of the measuring instrument. In this case, we can say that if X is the weight of school-age children in a national study, X is an example of a continuous random variable, since this variable can assume any value.