Exam 1: Defining and Collecting Data

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 to study their preferences for the various components of a potential package.The 500 employees who will participate in this study constitute the .

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.Information obtained from the sample will be used to draw conclusions about the true population .

Marital status is an example of a numerical variable.

As a population becomes large, it is usually better to obtain statistical information from the entire population.

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

Coverage error results in a .

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

The number of calories contained in a 12-ounce package of cheese will be measured on a ratio scale.

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 .

To monitor campus security, the campus police office is taking a survey of the number of students in a parking lot each 30 minutes of a 24-hour period with the goal of determining when patrols of the lot would serve the most students.If X is the number of students in the lot each period, then X is an example of

Sampling error becomes an ethical issue if the findings are purposely presented without reference to sample size and margin of error so that the sponsor can promote a viewpoint that might otherwise be truly insignificant.

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?" result in

The number of defective apples in a single box is an example of a continuous variable.

The professor of a business statistics class wanted to find out the mean amount of time per week her students spent studying for the class.She divided the fifty students on her roster into ten groups starting from the first student on the roster.The first student was randomly selected from the first group.Then every tenth student was selected from the remaining students.This is an example of a cluster sample.

Jared was working on a project to look at global warming and accessed an Internet site where he captured average global surface temperatures from 1866.Which of the four methods of data collection was he using?

Using different frames to generate data can lead to totally different conclusions.

Measurement error can become an ethical issue when an interviewer purposely guides the responses in a direction.

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

The personnel director at a large company studied the eating habits of the company's employees.The director noted whether employees brought their own lunches to work, ate at the company cafeteria, or went out to lunch.The goal of the study was to improve the food service at the company cafeteria.This type of data collection would best be considered as

Which of the following is a discrete quantitative (numerical) variable?