Exam 1: Defining and Collecting Data

SCENARIO 1-2 A Wall Street Journal poll asked 2,150 adults in the U.S.a series of questions to find out their view on the U.S.economy. -Referring to Scenario 1-2, the possible responses to the question "How many out of every 10 U.S.voters do you think feel that the U.S.economy is in a good shape?" result in

Coverage error can become an ethical issue if a group is intentionally excluded from the frame.

For a population frame containing N = 1,007 individuals, what code number should you assign to the first person on the list to use a table of random numbers?

Which of the following is NOT a reason for selecting a sample?

The oranges grown in corporate farms in an agricultural state were damaged by some unknown fungi a few years ago.Suppose the manager of a large farm wanted to study the impact of the fungi on the orange crops daily over a 6-week period.On each day a random sample of orange trees was selected from within a random sample of acres.The daily average number of damaged oranges per tree and the proportion of trees having damaged oranges were calculated.The two main measures calculated each day (i.e., average number of damaged oranges per tree and proportion of trees having damaged oranges) are called .

The quality ("terrible", "poor", "fair", "acceptable", "very good" and "excellent") of a day care center is an example of a numerical variable.

To gather opinions on the efficacy of U.S.foreign policies, a sample of 50 faculty members is selected from the pool of university professors who have taught political science at the graduate level.This is an example of a judgment sample.

Sampling error can be reduced by taking larger sample sizes.

SCENARIO 1-1 The manager of the customer service division of a major consumer electronics company is interested in determining whether the customers who have purchased a Blu-ray player made by the company over the past 12 months are satisfied with their products. -Referring to Scenario 1-1, the possible responses to the question "How much time do you use theBlu-ray player every week on the average?" are values from a

Which of the following can be reduced by proper interviewer training?

Measurement error will become an ethical issue when the findings are presented without reference to sample size and margin of error.

Which of the following types of samples can you use if you want to make valid statistical inferences from a sample to a population?

Whether the university is private, or public is an example of a nominal scaled variable.

To obtain a sample of 10 books in the store, the manager walked to the first shelf next to the cash register to pick the first 10 books on that shelf.This is an example of a

An insurance company evaluates many numerical variables about a person before deciding on an appropriate rate for automobile insurance.The number of tickets a person has received in the last3 years is an example of a numerical variable.

Measurement error can become an ethical issue when a survey sponsor chooses leading questions that guide the responses in a direction.

A personal computer user survey was conducted.Hours of personal computer use per week is an example of a numerical variable

The level of satisfaction ("Very unsatisfied", "Fairly unsatisfied", "Fairly satisfied", and "Very satisfied") in a class is an example of an ordinal scaled variable.

SCENARIO 1-2 A Wall Street Journal poll asked 2,150 adults in the U.S.a series of questions to find out their view on the U.S.economy. -Referring to Scenario 1-2, the possible responses to the question "In which year do you think the last recession in the U.S.started?" are values from a

The amount of alcohol consumed by a person per week is an example of a continuous variable.