Question 1

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.

Accepted Answer

The answer of Most colleges admit students based on their...

Question 2

Most analysts focus on the cost of tuition as the way to measure the cost of a college education.But incidentals,such as textbook costs,are rarely considered.A researcher at Drummand University wishes to estimate the textbook costs of first-year students at Drummand.To do so,she monitored the textbook cost of 250 first-year students and found that their average textbook cost was $600 per semester.Identify the population of interest to the researcher.

Accepted Answer

A) All Drummand University students 
B) All college students 
C) All first-year Drummand University students 
D) The 250 students that were monitored

Question 3

Most analysts focus on the cost of tuition as the way to measure the cost of a college education.But incidentals,such as textbook costs,are rarely considered.A researcher at Drummand University wishes to estimate the textbook costs of first-year students at Drummand.To do so,she monitored the textbook cost of 250 first-year students and found that their average textbook cost was $600 per semester.Identify the sample in the study.

Accepted Answer

A) All Drummand University students 
B) All college students 
C) All first-year Drummand University students 
D) The 250 students that were monitored

Question 4

The amount of alcohol consumed by a person per week will be measured on an interval scale.

Accepted Answer

A) True 
 B)False

Question 5

The chancellor of a major university was concerned about alcohol abuse on her campus and wanted to find out the proportion of students at her university who visited campus bars on the weekend before the final exam week.Her assistant took a random sample of 250 students.The answer on "whether you visited campus bars on the weekend before the final exam week" from students in the sample is an example of ________.

Accepted Answer

A) a categorical random variable 
B) a discrete random variable 
C) a continuous random variable 
D) a parameter

Question 6

The possible responses to the question "How many times in the past three months have you visited a city park?" are values from a discrete variable.

Accepted Answer

A) True 
 B)False

Question 7

The average number of units earned per semester by college students is suspected to be rising.A researcher at Calendula College wishes to estimate the number of units earned by students during the spring semester at Calendula.To do so,he randomly selects 100 student transcripts and records the number of units each student earned in the spring term.Identify the variable of interest to the researcher.

Accepted Answer

A) The number of students enrolled at Calendula College during the spring term 
B) The average indebtedness of Calendula College students enrolled in the spring 
C) The age of Calendula College students enrolled in the spring 
D) The number of units earned by Calendula College students during the spring term

Question 8

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

Accepted Answer

A) The color of a student's eyes 
B) The number of employees of an insurance company 
C) The amount of milk produced by a cow in one 24-hour period 
D) The number of gallons of milk sold at the local grocery store yesterday

Question 9

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.Using the information obtained from the sample to predict population characteristics with respect to malpractice litigation is an example of ________.

Accepted Answer

The answer of The Commissioner of Health in New York...

Question 10

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.

Accepted Answer

The answer of An insurance company evaluates many numerical variables...

Question 11

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

Accepted Answer

A) True 
 B)False

Question 12

Using the number of registered voters who turned out to vote for the primary in Iowa to predict the number of registered voters who will turn out to vote in Vermont's primary is an example of descriptive statistics.

Accepted Answer

A) True 
 B)False

Question 13

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

Accepted Answer

A) True 
 B)False

Question 14

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.

Accepted Answer

The answer of Most colleges admit students based on their...

Question 15

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 "Are you happy,indifferent,or unhappy with the performance per dollar spent on the DVD player?" result in

Accepted Answer

A) a nominal scale variable. 
B) an ordinal scale variable. 
C) an interval scale variable. 
D) a ratio scale variable.

Question 16

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

Accepted Answer

The answer of An insurance company evaluates many numerical variables...

Question 17

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

Accepted Answer

A) True 
 B)False

Question 18

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.

Accepted Answer

A) The 250 randomly selected adult American pine trees 
B) The 25,000 adult American pine trees in the forest 
C) All the adult American pine trees taller than 60 feet 
D) All American pine trees,of any age,in the forest

Question 19

The collection and summarization of the socioeconomic and physical characteristics of the employees of a particular firm is an example of

Accepted Answer

A) inferential statistics. 
B) descriptive statistics. 
C) a parameter. 
D) a statistic.

Question 20

Those methods involving the collection,presentation,and characterization of a set of data in order to properly describe the various features of that set of data are called

Accepted Answer

A) statistical inference. 
B) the scientific method. 
C) sampling. 
D) descriptive statistics.

Exam 1: Introduction

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.

The amount of alcohol consumed by a person per week will be measured on an interval scale.

The possible responses to the question "How many times in the past three months have you visited a city park?" are values from a discrete variable.

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

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.

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

Using the number of registered voters who turned out to vote for the primary in Iowa to predict the number of registered voters who will turn out to vote in Vermont's primary is an example of descriptive statistics.

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

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.

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

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

The collection and summarization of the socioeconomic and physical characteristics of the employees of a particular firm is an example of

Those methods involving the collection,presentation,and characterization of a set of data in order to properly describe the various features of that set of data are called