Review for 1.2-1.3 quiz

Town officials are deciding whether to build a public parking lot downtown. The officials decide to ask residents to come to a town hall meeting to participate to vote on the issue. A) Convenience B) Systematic C) Cluster D) SRS E) Self-Selected

The manager of a credit union wants to know whether its members utilize the online services offered on the credit union’s website. He randomly selects 20 members registered as local patrons of each of the 5 branches of the credit union to call and ask whether they use the online services. A) Convenience B) Stratified C) Cluster D) SRS E) Self-Selected

The human resource manager at a business wants to know how satisfied the company’s employees are with their jobs. She surveys the 20 people who sit closest to her office. A) Convenience B) Systematic C) Cluster D) SRS E) Self-Selected

Which tends to be the least reliable sampling technique? A) Systematic B) Cluster C) SRS D) Self-Selected

A writer for travel magazine wants to learn tourist ‘s opinions about nightlife in a city. She decides to visit a different tourist attraction every day for a week. She will have the magazine’s interns, who are traveling with her, interview every tourist they see at the attraction. A) Convenience B) Systematic C) Cluster D) SRS E) Self-Selected

Your class officers are planning a dance, and they want to know if they should hire a disc jockey or a live band. They decide to survey every tenth student as he or she leaves at the end of the school dance. A) Convenience B) Systematic C) Cluster D) SRS E) Self-Selected

A subset of the population or part of the population is called a A) census B) sample C) survey D) statistic E) experiment

In this, a treatment is imposed to collect data on their response to the treatment. This is a(n) a) survey b) statistic c) experiment d) observational study e) parameter

This is a number to describe a population A) census B) statistic C) parameter D) explanatory variable E) response variable

When a sample is not representative of the population, it is know to be: A) a statistic B) a survey C) a parameter D) biased

When one or more of the parts are left out when choosing a sample, the sample is A) underrepresentated B)overrepresentated C) random

This is the group that does not receive the treatment in the experiment A) treatment group B) control group C) observational group D) explanatory variable

Experiment, survey, or observational study A caretaker at a zoo wants to study the effect of a new diet on the health of the zoo’s elephants. She feeds half of the elephants the old food and half the new food then compares their health. A) experiment B) survey C) observational study

survey, experiment, observational study Experiment, survey, observational study Observational study, survey, experiment

Type of topping is the: Explanatory variable Control variable Response variable

What is the population? The 50 randomly chosen customers All shoppers in the world All shoppers in his store

approx. 300 Approx. 500 Approx. 200 Approx. 50

This topic is best addressed through a(n): Experiment Observational study survey

Answers Starting from slide 2: 2 B 3 A 4 D 5 C 6 B 7 B 8 C 9 C 10 D 11 A 12 B 13 A 14 B 15 A 16 C 17 A 18 B