Exam 1: Defining and Collecting Data

A personal computer user survey was conducted.Number of personal computers owned is an example of a numerical variable.

Which of the following is most likely a parameter as opposed to a statistic?

If a simple random sample is chosen with replacement,everyone has the same chance of selection on every selection.

Coverage error results in a .

The Dean of Students conducted a survey on campus.Major area of study is an example of a 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.

Most colleges admit students based on their achievements in several different areas.Whether a student has taken any advanced placement courses is an example of a variable.

Most analysts focus on the cost of tuition as the way to measure the cost of a college education.But incidentals,such as textbook costs,are rarely considered.A researcher at Drummand University wishes to estimate the textbook costs of first-year students at Drummand.To do so,she monitored the textbook cost of 250 first-year students and found that their average textbook cost was $600 per semester.Identify the sample in the study.

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 "What is your age at last birthday ?" results in:

The question: "Have you used any form of illicit drugs over the past 2 months?" will most likely result in measurement error if the question is answered.

The Dean of Students mailed a survey to a total of 400 students.The sample included 100 students randomly selected from each of the freshman,sophomore,junior,and senior classes on campus last term.What sampling method was used?

Which of the 4 methods of data collection is involved when a person counts the number of cars passing designated locations on the Los Angeles freeway system?

The only way one can eliminate sampling error is to take the whole population as the sample.

The evening host of a dinner dance reached into a bowl,mixed all the tickets around,and selected the ticket to award the grand door prize.What sampling method was used?

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.

results from the failure to collect data on all subjects in the sample.

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. -Unemployed but actively looking for job,3.Unemployed and quit looking for job?" are values from a

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 the Blu-ray player every week on the average?" result in

The Quality Assurance Department of a large urban hospital is attempting to monitor and evaluate patient satisfaction with hospital services.Prior to discharge,a random sample of patients is asked to fill out a questionnaire to rate such services as medical care,nursing,therapy,laboratory,food,and cleaning.The Quality Assurance Department prepares weekly reports that are presented at the Board of Directors meetings and extraordinary/atypical ratings are easy to flag.True population characteristics estimated from the sample results each week are called .

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