AP Stats Name __________________________________________________________
Chapter 5 Review
Part I - Multiple Choice (Questions 1-10) - Circle the answer of your choice.
1. Which one of the following is not a principle of experimentation?
(a) Randomly allocating experimental units to treatments.
(b) Stratifying the experimental units into groups of similar individuals and applying different treatments to each stratum.
(c) Using double blindness to eliminate bias.
(d) Replicating to measure overall experimental error and increase precision.
(e) Using a control group to determine whether treatment really works.
2. A simple random sample of size n is selected in such a way that
(a) Each member of the population has an equal chance of being selected.
(b) Each member of the population is given an opportunity to respond to the survey.
(c) All samples of size n have the same chance of being selected.
(d) The probability of selecting any sample is known to be
7rand
.
(e) The sample is guaranteed to represent the entire population.
3. In sample surveys, bias can be controlled by all of the following except
(a) Using a probability or chance sampling procedure.
(b) Wording questions so they are not confusing or misleading.
(c) Carefully training and supervising interviewers.
(d) Prompting respondents so that they give correct responses.
(e) Reducing non-response and undercoverage.
4. A graduate student conducts a study to determine whether a new activity-based method is better than the traditional lecture of
teaching statistics. He found two teachers to help him in his study for one semester. Mr. Dull volunteered to continue teaching with
traditional lectures and Ms. Perky agreed to try the new activity-based method. Each teacher planned to teach two sections of
approximately forty students each for adequate replication. At the end of the semester, all sections would take the same final exam and
their scores would be compared. What is the treatment variable in this study?
(a) Teacher
(b) Section of the Course
(c) Teaching Method
(d) Final Exam Score
(e) Student
5. In a study on the effect of reinforcement on learning from programmed text, two experimental treatments are planned: reinforcement
given after every frame of programmed text or reinforcement given after every three frames. Which one of the following control
groups would serve best in this study?
(a) A group which does not read the programmed text material.
(b) A group that reads the programmed material in prose formats.
(c) A group which reads the programmed material but does not receive reinforcement.
(d) A group that reads the programmed text material and reinforcement is given at random.
(e) A group which watches the video of the programmed material.
