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: a categorical variable.
B: a discrete random variable.
C: a continuous random variable.
D: a parameter.
A: a categorical variable.
B: a discrete random variable.
C: a continuous random variable.
D: a parameter.
举一反三
- 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: a categorical random variable. B: a discrete random variable. C: a continuous random variable. D: a parameter.
- The classification of student class designation (freshman, sophomore, junior, senior) is an example of A: a categorical random variable. B: a discrete random variable. C: a continuous random variable. D: a parameter.
- The classification of student class designation (freshman, sophomore, junior, senior) is an example of ( ) A: a categorical variable B: a discrete variable C: a continuous variable D: a parameter
- A variable that can take on values at any point over a given interval is called _______. A: a value variable B: a continuous random variable C: a point variable D: a discrete random variable
- Name of Internet service provider is A: discrete numerical variable B: continuous numerical variable C: categorical variable