MATH 225N STATISTICS FINAL EXAM 2 LATEST VERSIONS 2023-2024/MATH 225N WEEK 8 FINAL EXAM
QUESTIONS AND DETAILED ANSWERS
Statistics - (answer) is the science of collecting, organizing, analyzing, interpreting, and presenting data
refers to generalizing from a sample to a population, drawing conclusions, and making decisions refers
to - (answer) Inferential Statistics
refers to summarizing data rather than generalizing about the population is - (answer) Descriptive
Statistics
True or False: A strong correlation between A and B would imply that B is caused by A - (answer) False
True or False: The number of checks processed at a bank in a day is an example of categorical data -
(answer) False
True or False: The number of planes that land daily at an airport is an example of discrete data -
(answer) True
True or False: The weight of a bag of dog food is an example of discrete data - (answer) False
True or False: It is easier to attempt a census of a large population instead of relying on a sample -
(answer) False
True or False: Sampling error is completely avoidable by choosing the sample scientifically - (answer)
False
True or False: Cluster sampling is a type of stratified sampling that is based on geographical location -
(answer) True
Which of the following is numerical data? - (answer) The fuel economy (MPG) of your car
Numerical values calculated from a sample are called - (answer) statistics
, MATH 225N STATISTICS FINAL EXAM 2 LATEST VERSIONS 2023-2024/MATH 225N WEEK 8 FINAL EXAM
QUESTIONS AND DETAILED ANSWERS
True or False: The number of personal fouls by the Miami Heat in a game would be regarded as a
continuous variable - (answer) False
Thirty work orders are selected from a filing cabinet containing 500 work order folders by choosing
every 15th folder. Which sampling method is this? - (answer) Systematic sampling
Which sampling method is being used by a journalism student who is casually surveying opinions of her
friends about the university's cafeteria food for an article that she is writing? - (answer) Non-random
sampling
Net earnings reported by Xena Corp for the last 10 quarters is which type of variable? - (answer) A
time-series variable
A multivariate data set must contain - (answer) more than two variables
True or False: The following is an example of cross-sectional data:
Scores of 50 students on a midterm accounting exam last semester. - (answer) True
True or False: The following is an example of cross-sectional data:
Bob's scores on weekly accounting quizzes last semester. - (answer) False
True or False: The following is an example of time-series data:
Mexico's GDP for the last 10 quarters. - (answer) True
Which type of data is the following variable: number of employees in the Walmart store in Boone, NC? -
(answer) Ratio
Which type of data is the following variable: temperature (in Fahrenheit) in the ice-cream freezer at a
Walmart store? - (answer) Interval
QUESTIONS AND DETAILED ANSWERS
Statistics - (answer) is the science of collecting, organizing, analyzing, interpreting, and presenting data
refers to generalizing from a sample to a population, drawing conclusions, and making decisions refers
to - (answer) Inferential Statistics
refers to summarizing data rather than generalizing about the population is - (answer) Descriptive
Statistics
True or False: A strong correlation between A and B would imply that B is caused by A - (answer) False
True or False: The number of checks processed at a bank in a day is an example of categorical data -
(answer) False
True or False: The number of planes that land daily at an airport is an example of discrete data -
(answer) True
True or False: The weight of a bag of dog food is an example of discrete data - (answer) False
True or False: It is easier to attempt a census of a large population instead of relying on a sample -
(answer) False
True or False: Sampling error is completely avoidable by choosing the sample scientifically - (answer)
False
True or False: Cluster sampling is a type of stratified sampling that is based on geographical location -
(answer) True
Which of the following is numerical data? - (answer) The fuel economy (MPG) of your car
Numerical values calculated from a sample are called - (answer) statistics
, MATH 225N STATISTICS FINAL EXAM 2 LATEST VERSIONS 2023-2024/MATH 225N WEEK 8 FINAL EXAM
QUESTIONS AND DETAILED ANSWERS
True or False: The number of personal fouls by the Miami Heat in a game would be regarded as a
continuous variable - (answer) False
Thirty work orders are selected from a filing cabinet containing 500 work order folders by choosing
every 15th folder. Which sampling method is this? - (answer) Systematic sampling
Which sampling method is being used by a journalism student who is casually surveying opinions of her
friends about the university's cafeteria food for an article that she is writing? - (answer) Non-random
sampling
Net earnings reported by Xena Corp for the last 10 quarters is which type of variable? - (answer) A
time-series variable
A multivariate data set must contain - (answer) more than two variables
True or False: The following is an example of cross-sectional data:
Scores of 50 students on a midterm accounting exam last semester. - (answer) True
True or False: The following is an example of cross-sectional data:
Bob's scores on weekly accounting quizzes last semester. - (answer) False
True or False: The following is an example of time-series data:
Mexico's GDP for the last 10 quarters. - (answer) True
Which type of data is the following variable: number of employees in the Walmart store in Boone, NC? -
(answer) Ratio
Which type of data is the following variable: temperature (in Fahrenheit) in the ice-cream freezer at a
Walmart store? - (answer) Interval
