Exam 1: Defining and Collecting Data

The classification of student major (accounting, economics, management, marketing, other)is an Example of

True or False: A population is the totality of items or things under consideration.

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

True or False: Selection bias occurs more frequently in systematic samples than in simple random samples.

A telemarketer set the company's computerized dialing system to contact every 25th person Listed in the local telephone directory.What sampling method was used?

The quality ("terrible", "poor", "fair", "acceptable", "very good" and "excellent")of a day care center is an example of a numerical 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 many people are there in Your household?" result in

Since a _______ is not a randomly selected probability sample, there is no way to know how Well it represents the overall population.

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 _______.

True or False: The question "How many times have you abused illicit drugs in the last 6 months?" will most likely result in nonresponse error.

Which of the following yields a cluster sample?

Coverage error results in a ________.

The Human Resources Director of a large corporation wishes to develop an employee benefits package and decides to select 500 employees from a list of all (N = 40,000)workers in order to study their preferences for the various components of a potential package.All the employees in the corporation constitute the _______.

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

True or False: When dealing with human surveys, we are usually interested in sampling with replacement.

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

True or False: The answer to the question "How many hours on average do you spend watching TV every week?" is an example of a ratio scaled variable.

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 on a daily basis 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)may be used on a daily basis to estimate the respective true population _______.

SCENARIO 1-3 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 1-3, if a customer survey questionnaire is included in all the Blu-ray Players made and sold by the company over the past 12 months, this method of collecting data Will most like suffer from

True or False: In a business statistics class students sit randomly without particular preferences. A sample is selected by including everybody who sits in the first row.This is an example of a cluster sample.