Question 1

Mail surveys are attractive because of their high response rates.

Accepted Answer

A) True 
 B)False

Question 2

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

Accepted Answer

A) True 
 B)False

Question 3

Which method is likely to be used by a journalism student who is casually surveying opinions of students about the university's cafeteria food for an article that she is writing?

Accepted Answer

A) Simple random sample 
B) Systematic random sample 
C) Cluster sample 
D) Convenience sample 
A) Simple random sample 
B) Systematic random sample 
C) Cluster sample 
D) Convenience sample

Question 4

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 5

A problem with judgment sampling is that the sample may not reflect the population.

Accepted Answer

A) True 
 B)False

Question 6

Your rating of the food served at a local restaurant using a three-point scale of 0 = gross, 1 = decent, 2 = yummy is ___________ data.

Accepted Answer

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

Question 7

Internet surveys posted on popular websites have no bias since anyone can reply.

Accepted Answer

A) True 
 B)False

Question 8

Nominal data refer to data that can be ordered in a natural way.

Accepted Answer

A) True 
 B)False

Question 9

The weight of a bag of dog food is an example of discrete data.

Accepted Answer

A) True 
 B)False

Question 10

Which is a discrete variable?

Accepted Answer

A) The time it takes to put on a pair of jeans 
B) The price you paid for your last pair of jeans 
C) The distance to the store where you purchased your last pair of jeans 
D) The number of pairs of jeans that you own 
A) The time it takes to put on a pair of jeans 
B) The price you paid for your last pair of jeans 
C) The distance to the store where you purchased your last pair of jeans 
D) The number of pairs of jeans that you own

Question 11

An observation in a data set would refer to:

Accepted Answer

A) only a variable whose value is recorded by visual inspection. 
B) a data item whose value is numerical (as opposed to categorical). 
C) a single row that contains one or more observed variables. 
D) the values of all the variables in the entire data set. 
A) only a variable whose value is recorded by visual inspection. 
B) a data item whose value is numerical (as opposed to categorical). 
C) a single row that contains one or more observed variables. 
D) the values of all the variables in the entire data set.

Question 12

Temperature measured in degrees Fahrenheit is an example of interval data.

Accepted Answer

A) True 
 B)False

Question 13

Using a sample to make generalizations about an aspect of a population is called:

Accepted Answer

A) data mining. 
B) descriptive statistics. 
C) random sampling. 
D) statistical inference. 
A) data mining. 
B) descriptive statistics. 
C) random sampling. 
D) statistical inference.

Question 14

A list of the salaries, ages, and years of experience for 50 CEOs is a multivariate data set.

Accepted Answer

A) True 
 B)False

Question 15

Numerical data can be either discrete or continuous.

Accepted Answer

A) True 
 B)False

Question 16

The number of checks processed at a bank in a day is an example of categorical data.

Accepted Answer

A) True 
 B)False

Question 17

Which of the following is false?

Accepted Answer

A) Sampling error is the difference between the true parameter and the sample estimate. 
B) Sampling error is a result of unavoidable random variation in a sample. 
C) A sampling frame is chosen from the target population in a statistical study. 
D) The target population must first be defined by a full list or data file of all individuals. 
A) Sampling error is the difference between the true parameter and the sample estimate. 
B) Sampling error is a result of unavoidable random variation in a sample. 
C) A sampling frame is chosen from the target population in a statistical study. 
D) The target population must first be defined by a full list or data file of all individuals.

Question 18

Which is least likely to be regarded as a ratio variable?

Accepted Answer

A) A critic's rating of a restaurant on a 1 to 4 scale 
B) Automobile exhaust emission of nitrogen dioxide (milligrams per mile) 
C) Number of customer complaints per day at a cable TV company office 
D) Cost of an eBay purchase 
A) A critic's rating of a restaurant on a 1 to 4 scale 
B) Automobile exhaust emission of nitrogen dioxide (milligrams per mile) 
C) Number of customer complaints per day at a cable TV company office 
D) Cost of an eBay purchase

Question 19

Analysis of month-by-month changes in stock market prices during the most recent recession would require the use of time series data.

Accepted Answer

A) True 
 B)False

Question 20

Which is most nearly correct regarding sampling error?

Accepted Answer

A) It can be eliminated by increasing the sample size. 
B) It cannot be eliminated by any statistical sampling method. 
C) It can be eliminated by using Excel's =RANDBETWEEN() function. 
D) It can be eliminated by utilizing systematic random sampling. 
A) It can be eliminated by increasing the sample size. 
B) It cannot be eliminated by any statistical sampling method. 
C) It can be eliminated by using Excel's =RANDBETWEEN() function. 
D) It can be eliminated by utilizing systematic random sampling.

Mail surveys are attractive because of their high response rates.

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

Which method is likely to be used by a journalism student who is casually surveying opinions of students about the university's cafeteria food for an article that she is writing?

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

A problem with judgment sampling is that the sample may not reflect the population.

Your rating of the food served at a local restaurant using a three-point scale of 0 = gross, 1 = decent, 2 = yummy is ___________ data.

Internet surveys posted on popular websites have no bias since anyone can reply.

Nominal data refer to data that can be ordered in a natural way.

The weight of a bag of dog food is an example of discrete data.

Which is a discrete variable?

An observation in a data set would refer to:

Temperature measured in degrees Fahrenheit is an example of interval data.

Using a sample to make generalizations about an aspect of a population is called:

A list of the salaries, ages, and years of experience for 50 CEOs is a multivariate data set.

Numerical data can be either discrete or continuous.

The number of checks processed at a bank in a day is an example of categorical data.

Which of the following is false?

Which is least likely to be regarded as a ratio variable?

Analysis of month-by-month changes in stock market prices during the most recent recession would require the use of time series data.

Which is most nearly correct regarding sampling error?

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

Time Series Analysis

Chi-Square Tests

Nonparametric Tests

Quality Management

Filters

Exam 2: Data Collection

Mail surveys are attractive because of their high response rates.

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

Which method is likely to be used by a journalism student who is casually surveying opinions of students about the university's cafeteria food for an article that she is writing?

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

A problem with judgment sampling is that the sample may not reflect the population.

Your rating of the food served at a local restaurant using a three-point scale of 0 = gross, 1 = decent, 2 = yummy is ___________ data.

Internet surveys posted on popular websites have no bias since anyone can reply.

Nominal data refer to data that can be ordered in a natural way.

The weight of a bag of dog food is an example of discrete data.

Which is a discrete variable?

An observation in a data set would refer to:

Temperature measured in degrees Fahrenheit is an example of interval data.

Using a sample to make generalizations about an aspect of a population is called:

A list of the salaries, ages, and years of experience for 50 CEOs is a multivariate data set.

Numerical data can be either discrete or continuous.

The number of checks processed at a bank in a day is an example of categorical data.

Which of the following is false?

Which is least likely to be regarded as a ratio variable?

Analysis of month-by-month changes in stock market prices during the most recent recession would require the use of time series data.

Which is most nearly correct regarding sampling error?

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

Time Series Analysis

Chi-Square Tests

Nonparametric Tests

Quality Management

Filters