Exam 1: Defining and Collecting Data

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 many people are there in your household?" result in

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

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

To gather information on the preferences of instructors at universities on topics for a business statistics textbook that it will publish, a publishing company invited 10 faculty members who have adopted one of the textbooks that it has published.This is an example of a

A personal computer user survey was conducted.The number of years using a personal computer is an example of a _______ numeric variable

The Commissioner of Health in New York State wanted to study malpractice litigation in New York.A sample of 31 thousand medical records was drawn from a population of 2.7 million patients who were discharged during 2010.The true proportion of malpractice claims filed from the population of 2.7 million patients is a _______.

Which of the following sampling methods will more likely be susceptible to ethical violation when used to form conclusions about the entire population?

Items or individuals in a judgment sample are chosen according to their probability of occurrence.

Which of the following is NOT a reason for the need for sampling?

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 population of interest to the researcher.

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

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 would you rate the quality of your purchase experience with 1 = excellent, 2 = good, 3 = decent, 4 = poor, 5 = terrible?" are values from a

Systematic samples are less efficient than a stratified sample.

You stand at the main entrance to a departmental store and pick the first 20 customers that enter the store after it has opened its door for business on a single day.This is an example of a systematic sample.

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

A population frame for a survey contains a listing of 72,345 names.Using a table of random numbers, how many digits will the code numbers for each member of your population contain?

The possible responses to the question "How long have you been living at your current residence?" are values from a continuous variable.

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.Which of the following will be a good frame for drawing a sample?

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

Which of the following yields a systematic sample?