Exam 1: Defining and Collecting Data

To demonstrate a sampling method, the instructor in a class picked the first 5 students sitting in The last row of the class.This is an example of a

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

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

The Dean of Students conducted a survey on campus.Number of clubs, groups, teams, and organizations affiliated with on campus is an example of a _______ numerical variable.

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

True or False: The answer to the question "What is your favorite color?" is an example of an ordinal scaled variable.

True or False: The only reliable way a researcher can make statistical inferences from a sample to a population is to use nonprobability sampling methods.

Most colleges admit students based on their achievements in a number of different areas.The grade obtained in senior level English.(A, B, C, D, or F)is an example of a _______ variable.

A study is under way in Yosemite National Forest to determine the adult height of American Pine trees.Specifically, the study is attempting to determine what factors aid a tree in reaching Heights greater than 60 feet tall.It is estimated that the forest contains 25,000 adult American Pines.The study involves collecting heights from 250 randomly selected adult American pine Trees and analyzing the results.Identify the sample in the study.

True or False: When participants are allowed to self-select into the sample, you have a nonprobability sample.

An insurance company evaluates many numerical variables about a person before deciding on an appropriate rate for automobile insurance.The number of tickets a person has received in the last 3 years is an example of a _______ numerical variable.

Which of the following sampling methods is a probability sample?

The amount of time a student spent studying for an exam will be measured on a ratio scale.

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?

The British Airways Internet site provides a questionnaire instrument that can be answered Electronically.Which of the 4 methods of data collection is involved when people complete the Questionnaire?

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 out of every 10 U.S. Voters do you think feel that the U.S.economy is in a good shape?" are values from a

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, which of the following questions in the survey will NOT likely Induce a measurement error?

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 brand of Blu-ray player Did you purchase?" are values from a

Referring to Scenario 1-2, the possible responses to the question "How many people in your Household are unemployed currently?" result in

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 "What do you think is the Current number of people unemployed in the country?" are values from a