Exam 1: Introduction

TABLE 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 DVD player made by the company over the past 12 months are satisfied with their products. -Referring to Table 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

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

TABLE 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 Table 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

A personal computer user survey was conducted. The number of computer magazine subscriptions is an example of a ________ numerical variable.

TABLE 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 Table 1-2, the possible responses to the question "How satisfied are you with the U.S. economy today with 1 = very satisfied, 2 = moderately satisfied, 3 = neutral, 4 = moderately dissatisfied and 5 = very dissatisfied?" result in

Compiling the number of registered voters who turned out to vote for the primary in Iowa is an example of descriptive statistics.

TABLE 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 DVD player made by the company over the past 12 months are satisfied with their products. -Referring to Table 1-1, the possible responses to the question "What brand of DVD player did you purchase?" result in

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 variable of interest in the study.

Most colleges admit students based on their achievements in a number of different areas. Whether a student has taken any advanced placement courses is an example of a ________ variable.

The Dean of Students conducted a survey on campus. Grade point average (GPA)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.

Managers need an understanding of statistics to be able to present and describe information accurately, draw conclusions about large populations based on small samples, improve processes, and make reliable forecasts.

Most colleges admit students based on their achievements in a number of different areas. The total SAT score achieved by a student is an example of a ________ numerical variable.

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

A sample is the portion of the universe that is selected for analysis.

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. In this study, methods that result in decisions concerning population characteristics based only on the sample results are called ________.

The answer to the question "How do you rate the quality of your business statistics course?" is an example of an ordinal scaled variable.

TABLE 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 DVD player made by the company over the past 12 months are satisfied with their products. -Referring to Table 1-1, the possible responses to the question "Out of a 100 point score with 100 being the highest and 0 being the lowest, what is your satisfaction level with the DVD player that you purchased?" result in

TABLE 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 DVD player made by the company over the past 12 months are satisfied with their products. -Referring to Table 1-1, the possible responses to the question "What is your annual income rounded to the nearest thousands?" result in

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 collection, presentation, and characterization of the data from patient medical records are examples of ________.