18. Statistics teachers often debate the best order in w hich to teach topics. O

Question

18. Statistics teachers often debate the best order in w hich to teach topics. One group of teachers likes to teach of studies first. Another group likes to begin with data analysis. To see which order is more effective in pre ing students for the AP Exam, an experiment was pro- posed. A large group of teachers, each of whom teaches two sections of statis experiment. Each teacher will randomly assign one of their classes to begin with design, and the other to begin with data analysis. Which is the correct description of this design? A) The experimental units are the classrooms, the par- tics, volunteered to be a part of the blocks are the teachers, and the response variable is the difference in average AP Exam score for each teacher's classes. B) The experimental units are the teachers, there are no blocks, and the response variable is the average AP Exam score for each teacher. C) The experimental units are the individual students, the blocks are the classrooms, and the response variable is each individual student's AP Exam score. D) The experimental units are the individual students, the blocks are the teachers, and the response variable is the average AP Exam score for each classroom. E) The experimental units are the orders of topics, the blocks are the teachers, and the response variable is the average AP Exam score for all students who us each order of topics.

Explanation / Answer

The correct answer is option D because experimental units refer to individual units on which the experiment is conduct. Blocks are the different treatment groups to be applied. Response is the judgement criteria.

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