Exam 1: Defining and Collecting Data

A sample of 300 subscribers to a magazine is selected from a population frame of 9,000 subscribers.If, upon examining the data, it is determined that no subscriber had been selected in the sample more than once,

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?

The amount of coffee consumed by an individual in a day is an example of a discrete numerical variable.

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

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 more months do you think the U.S.economy will require to get out of a recession?" are values from a

_results from the exclusion of certain groups of subjects from a population frame.

Which of the following yields a cluster sample?

Which of the following yields a systematic sample?

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?

At US Data Corporation's web site, they advertised that "Because of our commitment to quality and our vast amount of industry knowledge and experience, we have grown to be one of America's leading providers of mailing lists, marketing data, sales leads and research data.We maintain databases of information on consumers and businesses nationwide that set industry standards for mission critical currency, reliability and accuracy." Trying to reach 500 potential donors for their annual phone donation campaign, a local fire department purchased a list of donors from the company.This list is an example of a

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 students into the left, right and center groups according to the location they sat in the class that day.One of these 3 groups was randomly selected and everyone in the group was asked the mean amount of time per week he/she spent studying for the class.This is an example of a cluster sample.

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

The Dean of Students conducted a survey on campus.Number of credits currently enrolled for is an example of a numerical variable.

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

In purchasing an automobile, there are several variables to consider.The classification of the car as a subcompact, compact, standard, or luxury size is an example of a variable.

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

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

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

In purchasing an automobile, there are several variables to consider.The body style of the car(sedan, coupe, wagon, etc.) is an example of a 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 "On the scale of 1 to 100 with 1 being extremely anxious and 100 being totally not anxious, rate your level of anxiety in this U.S.economy?" results in