1 A college randomly selected 100 students to record their age and address. (a) What is the population? (b) What is the sample? (c) What kind of variable is age? (d) What kind of variable is address?
2 In your own words, explain why the parameter is fixed and the statistic varies.
- myisland8132Lv 71 0 年前最佳解答
1 the all students in the college. (b) the 100 students who are selected. (c) scale. (d) nominal
2 As the parameter is calculated from the population and because the population is fixed, the parameter is also fixed. On the other hand, statistic is calculated from the sample and is changed again and again in each experiment. So the statistic will varies.