Question 1

Likert scales are especially important in opinion polls and marketing surveys.

Accepted Answer

A) True 
 B)False

Question 2

If we choose 500 random numbers using Excel's function =RANDBETWEEN(1,99),we would most likely find that

Accepted Answer

A) numbers near the mean (50)would tend to occur more frequently. 
B) numbers near 1 and 99 would tend to occur less frequently. 
C) some numbers would occur more than once. 
D) the numbers would have a clear pattern. 
A) numbers near the mean (50)would tend to occur more frequently. 
B) numbers near 1 and 99 would tend to occur less frequently. 
C) some numbers would occur more than once. 
D) the numbers would have a clear pattern.

Question 3

Comparing a census of a large population to a sample drawn from it,we expect that the

Accepted Answer

A) sample is usually a more practical method of obtaining the desired information. 
B) accuracy of the observations in the census is surely higher than in the sample. 
C) sample must be a large fraction of the population to be accurate. 
A) sample is usually a more practical method of obtaining the desired information. 
B) accuracy of the observations in the census is surely higher than in the sample. 
C) sample must be a large fraction of the population to be accurate.

Question 4

Which of the following is not a likely reason for sampling?

Accepted Answer

A) The destructive nature of certain tests 
B) The physical impossibility of checking all the items in the population 
C) Prohibitive cost of studying the entire population 
D) The expense of obtaining random numbers 
A) The destructive nature of certain tests 
B) The physical impossibility of checking all the items in the population 
C) Prohibitive cost of studying the entire population 
D) The expense of obtaining random numbers

Question 5

A multivariate data set contains

Accepted Answer

A) more than two observations. 
B) more than two categorical variables. 
C) more than two variables. 
D) more than two levels of measurement. 
A) more than two observations. 
B) more than two categorical variables. 
C) more than two variables. 
D) more than two levels of measurement.

Question 6

The number of planes per day that land at an airport is an example of discrete data.

Accepted Answer

A) True 
 B)False

Question 7

The number of passengers "bumped" on a particular airline flight is ________ data.

Accepted Answer

A) nominal 
B) ordinal 
C) interval 
D) ratio 
A) nominal 
B) ordinal 
C) interval 
D) ratio

Question 8

A binary variable (also called a dichotomous variable or dummy variable)has

Accepted Answer

A) only two possible values. 
B) continuous scale values. 
C) rounded data values. 
D) ordinal or interval values. 
A) only two possible values. 
B) continuous scale values. 
C) rounded data values. 
D) ordinal or interval values.

Question 9

Running times for 3,000 runners in a 5k race would be a multivariate data set.

Accepted Answer

A) True 
 B)False

Question 10

Which is a time series variable?

Accepted Answer

A) VISA balances of 30 students on December 31 of this year 
B) Net earnings reported by Xena Corp.for the last 10 quarters 
C) Dollar exchange rates yesterday against 10 other world currencies 
D) Titles of the top 10 movies in total revenue last week 
A) VISA balances of 30 students on December 31 of this year 
B) Net earnings reported by Xena Corp.for the last 10 quarters 
C) Dollar exchange rates yesterday against 10 other world currencies 
D) Titles of the top 10 movies in total revenue last week

Question 11

When we are choosing a random sample and we do not place chosen units back into the population,we are

Accepted Answer

A) sampling with replacement. 
B) sampling without replacement. 
C) using a systematic sample. 
D) using a voluntary sample. 
A) sampling with replacement. 
B) sampling without replacement. 
C) using a systematic sample. 
D) using a voluntary sample.

Question 12

A cluster sample is a type of stratified sample that is based on geographical location.

Accepted Answer

A) True 
 B)False

Question 13

A section of the population we have targeted for analysis is

Accepted Answer

A) a statistic. 
B) a frame. 
C) a sample. 
D) a coven. 
A) a statistic. 
B) a frame. 
C) a sample. 
D) a coven.

Question 14

An advantage of convenience samples over random samples is that

Accepted Answer

A) they are easy to analyze. 
B) it is easier to determine the sample size needed. 
C) it is easier to calculate the sampling errors involved. 
D) data collection cost is reduced. 
A) they are easy to analyze. 
B) it is easier to determine the sample size needed. 
C) it is easier to calculate the sampling errors involved. 
D) data collection cost is reduced.

Question 15

Which statement is correct?

Accepted Answer

A) Selecting every fifth shopper arriving at a store will approximate a random sample of shoppers. 
B) Selecting only shoppers who drive SUVs is a stratified sampling method. 
C) A census is preferable to a sample for most business problems. 
D) Stratified samples are usually cheaper than other methods. 
A) Selecting every fifth shopper arriving at a store will approximate a random sample of shoppers. 
B) Selecting only shoppers who drive SUVs is a stratified sampling method. 
C) A census is preferable to a sample for most business problems. 
D) Stratified samples are usually cheaper than other methods.

Question 16

A sampling technique used when groups are defined by their geographical location is

Accepted Answer

A) cluster sampling. 
B) convenience sampling. 
C) judgment sampling. 
D) random sampling. 
A) cluster sampling. 
B) convenience sampling. 
C) judgment sampling. 
D) random sampling.

Question 17

When the population is large,a sample estimate is usually preferable to a census.

Accepted Answer

A) True 
 B)False

Question 18

Judgment sampling is sometimes preferred over random sampling,for example,when

Accepted Answer

A) the desired sample size is much larger than the population. 
B) the sampling budget is large and the population is conveniently located. 
C) time is short and the sampling budget is limited. 
D) the population is readily accessible and sampling is nondestructive. 
A) the desired sample size is much larger than the population. 
B) the sampling budget is large and the population is conveniently located. 
C) time is short and the sampling budget is limited. 
D) the population is readily accessible and sampling is nondestructive.

Question 19

A Likert scale with an even number of scale points between "Strongly Agree" and "Strongly Disagree" is intended to prevent "neutral" choices.

Accepted Answer

A) True 
 B)False

Question 20

The closing price of a stock is an example of ratio data.

Accepted Answer

A) True 
 B)False

Likert scales are especially important in opinion polls and marketing surveys.

If we choose 500 random numbers using Excel's function =RANDBETWEEN(1,99),we would most likely find that

Comparing a census of a large population to a sample drawn from it,we expect that the

Which of the following is not a likely reason for sampling?

A multivariate data set contains

The number of planes per day that land at an airport is an example of discrete data.

The number of passengers "bumped" on a particular airline flight is ________ data.

A binary variable (also called a dichotomous variable or dummy variable)has

Running times for 3,000 runners in a 5k race would be a multivariate data set.

Which is a time series variable?

When we are choosing a random sample and we do not place chosen units back into the population,we are

A cluster sample is a type of stratified sample that is based on geographical location.

A section of the population we have targeted for analysis is

An advantage of convenience samples over random samples is that

Which statement is correct?

A sampling technique used when groups are defined by their geographical location is

When the population is large,a sample estimate is usually preferable to a census.

Judgment sampling is sometimes preferred over random sampling,for example,when

A Likert scale with an even number of scale points between "Strongly Agree" and "Strongly Disagree" is intended to prevent "neutral" choices.

The closing price of a stock is an example of ratio data.

Overview of Statistics

Describing Data Visually

Descriptive Statistics

Probability

Discrete Probability Distributions

Continuous Probability Distributions

Sampling Distributions and Estimation

One-Sample Hypothesis Tests

Two-Sample Hypothesis Tests

Analysis of Variance

Simple Regression

Multiple Regression

Chi-Square Tests

Filters

Exam 2: Data Collection

Likert scales are especially important in opinion polls and marketing surveys.

If we choose 500 random numbers using Excel's function =RANDBETWEEN(1,99),we would most likely find that

Comparing a census of a large population to a sample drawn from it,we expect that the

Which of the following is not a likely reason for sampling?

A multivariate data set contains

The number of planes per day that land at an airport is an example of discrete data.

The number of passengers "bumped" on a particular airline flight is ________ data.

A binary variable (also called a dichotomous variable or dummy variable)has

Running times for 3,000 runners in a 5k race would be a multivariate data set.

Which is a time series variable?

When we are choosing a random sample and we do not place chosen units back into the population,we are

A cluster sample is a type of stratified sample that is based on geographical location.

A section of the population we have targeted for analysis is

An advantage of convenience samples over random samples is that

Which statement is correct?

A sampling technique used when groups are defined by their geographical location is

When the population is large,a sample estimate is usually preferable to a census.

Judgment sampling is sometimes preferred over random sampling,for example,when

A Likert scale with an even number of scale points between "Strongly Agree" and "Strongly Disagree" is intended to prevent "neutral" choices.

The closing price of a stock is an example of ratio data.

Overview of Statistics

Describing Data Visually

Descriptive Statistics

Probability

Discrete Probability Distributions

Continuous Probability Distributions

Sampling Distributions and Estimation

One-Sample Hypothesis Tests

Two-Sample Hypothesis Tests

Analysis of Variance

Simple Regression

Multiple Regression

Chi-Square Tests

Filters