31) At a local community college, five statistics classes are randomly selected

Question

31) At a local community college, five statistics classes are randomly selected out of 20 and all of the students from each class are interviewed 31) A) convenience B) random C) stratified D) cluster E) systematic 32) A community college student interviews everyone in a statistics class to determine the 32) percentage of students that own a car. A) convenience B) cluster C) stratified D) systematic E) random 33) If a weather center monitors and calculates the average number of tornadoes that pass through Topeka, Kansas each year, what type of variable would they be investigating? 33) B) isolated variable D) hypothesis variable C) controlled variable

Explanation / Answer

31. Five statistics classes are randomly selected so the correct option is B) Random

31. B) Random

32. Here we are taking whole statistic class as a sample. So this is a Cluster.

32. C) Cluster

33. weather center announce there report by the prediction. So it is Hypothetical. So the variable is hypothesis variable.

33. D) Hypothesis Variable

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