Math 225N Statistical Final Exam Questions And Answers With Complete Solution

MATH 225N STATISTICS FINAL EXAM – CHAMBERLAIN
COLLEGE OF NURSING FINAL EXAM| COMPLETE
VERIFIED EXAM QUESTIONS WITH 100% RATED CORRECT
ANSWERS | 2025-2026 LATEST UPDATE | GET IT A+

Statistics

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

Inferential Statistics

refers to summarizing data rather than generalizing about the population.

Descriptive Statistics

True or False: A strong correlation between A and B would imply that B is caused
by A

False

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

False

True or False: The number of planes that land daily at an airport is an example of
discrete data.

True

True or False: The weight of a bag of dog food is an example of discrete data.

False
True or False: It is easier to attempt a census of a large population instead of
relying on a sample.

False

True or False: Sampling error is completely avoidable by choosing the sample
scientifically.


1

,False

True or False: Cluster sampling is a type of stratified sampling that is based on
geographical location

True

Which of the following is numerical data?
The fuel economy (MPG) of your car

Numerical values calculated from a sample are called

statistics

True or False: The number of personal fouls by the Miami Heat in a game would be
regarded as a continuous variable.

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?

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?

Non-random sampling

Net earnings reported by Xena Corp for the last 10 quarters are which type of
variable?

A time-series variable

A multivariate data set must contain

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.

True

True or False: The following is an example of cross-sectional data:
Bob's scores on weekly accounting quizzes last semester.

False


2

, True or False: The following is an example of time-series data:
Mexico's GDP for the last 10 quarters.

True

Which type of data is the following variable: number of employees in the Walmart
store in Boone, NC?

Ratio

Which type of data is the following variable: temperature (in Fahrenheit) in the
ice-cream freezer at a Walmart store?

Interval

Which type of data is the following variable: name of the cashier at register 3 in a
Walmart store?

Nominal

Which type of data is the following variable: manager's rating (i.e., 1 = good, 2 =
excellent, etc.) of the cashier at register 3 in a Walmart store?

Ordinal
True or False: Say, the target population is all stocks in the S&P 500 index. The
following is an example of a parameter: the average price/earnings ratio for all
500 stocks in the S&P index.

True

True or False: Say, the target population is all stocks in the S&P 500 index. The
following is an example of a parameter: the proportion of all stocks in the S&P 500
index that had negative earnings last year.

True

True or False: Say, the target population is all stocks in the S&P 500 index. The
following is an example of a parameter: the proportion of energy-related stocks in
a random sample of 50 stocks.

False

True or False: Say, the target population is all stocks in the S&P 500 index. The
following is an example of a parameter: the average rate of return for 20 stocks
recommended by a broker.

False

3