100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached 4.2 TrustPilot
logo-home
Exam (elaborations)

QMB 3200 – Final Exam Questions and Answers (2024–2025, Already Graded A+) | Complete Business Statistics Guide

Rating
-
Sold
-
Pages
48
Grade
A+
Uploaded on
09-10-2025
Written in
2025/2026

This document contains the graded A+ version of the QMB 3200 Final Exam Questions and Answers for the 2024–2025 academic year. It includes all verified solutions to questions from the University of Central Florida’s (UCF) Business Statistics course, ensuring 100% accuracy. Topics covered include descriptive and inferential statistics, probability distributions, sampling techniques, confidence intervals, hypothesis testing, regression and correlation analysis, and time series forecasting. Each question is paired with clear step-by-step solutions, making it an excellent resource for mastering QMB 3200 exam material and achieving top results.

Show more Read less
Institution
QMB
Course
QMB











Whoops! We can’t load your doc right now. Try again or contact support.

Written for

Institution
QMB
Course
QMB

Document information

Uploaded on
October 9, 2025
Number of pages
48
Written in
2025/2026
Type
Exam (elaborations)
Contains
Questions & answers

Content preview

QMB 3200 Final Exam Questions And
Answers 2024:2025 Already Graded A+

Suppose we have the following data: 12, 17, 13, 25, 16, 21, 30,
y y y y y y y y y y y y


14, 16, and 18. To find the 10% trimmed mean, what numbers s
y y y y y y y y y y y y


hould be deleted from the calculation? - ANSWER-12 and 30
y y y y y y y y y




Which of the following is not resistant to the outliers in a data set
y y y y y y y y y y y y y


?
a. Median
y




b. Mean
y


c. Variance
y




d. Interquartile range - ANSWER-b. mean
y y y y y




The pth percentile is a value such that at least p percent of the obs
y y y y y y y y y y y y y y


ervations are: - ANSWER-less than or equal to this value.
y y y y y y y y y




Which of the following provides a measure of central location for
y y y y y y y y y y y


the data?y




a. Mean
b. Variance
c. Mode
d. Standard deviation - ANSWER-a. mean y y y y

,When testing water for chemical impurities, results are often re
y y y y y y y y y


ported as BDL, that is, below detection limit. The following data
y y y y y y y y y y y


set gives the measurements of the amount of lead in a series of
y y y y y y y y y y y y y


water samples taken from inner-city households (ppm):
y y y y y y




5, 7, 12, BDL, 10, 8, BDL, 20, 6
y y y y y y y y




Which of the following is correct?
y y y y y




a. The mean lead level in the water is about 10 ppm.
y y y y y y y y y y


b. The median lead level in the water is 8 ppm.
y y y y y y y y y




c. The mean lead level in the water is about 8 ppm.
y y y y y y y y y y




d. The median lead level in the water is 7 ppm. - ANSWER-
y y y y y y y y y y y


d. The median lead level in the water is 7 ppm.
y y y y y y y y y y




A student made scores of 85, 56, and 91 on her first three statistic
y y y y y y y y y y y y y


s tests. What score does she need to make on her next test to hav
y y y y y y y y y y y y y y


e an 80 test average? - ANSWER-88
y y y y y y

,Growth factors for the population of Dallas in the past five years
y y y y y y y y y y y


have been 1, 2, 3, 4, and 5, respectively. The geometric mean is:
y y y y y y y y y y y y y


- ANSWER-^5square root 120
y y y y




A sample of 99 distances has a mean of 24 feet and a median of
y y y y y y y y y y y y y y


21.5 feet. Unfortunately, it has just been discovered that an obse
y y y y y y y y y y


rvation that was erroneously recorded as "30" actually had a valu
y y y y y y y y y y


e of "35." If we make this correction to the data, then: - ANSWER-
y y y y y y y y y y y y y


the median remains the same, but the mean is increased.
y y y y y y y y y




A numerical value used as a summary measure for a sample, such
y y y y y y y y y y y y


as sample mean, is known as a: - ANSWER-sample statistic.
y y y y y y y y y

, The measure of location that is most likely to be influenced by ext
y y y y y y y y y y y y


reme values in a data set is the: - ANSWER-mean
y y y y y y y y y




A student was performing an experiment that compared a new hi
y y y y y y y y y y


gh protein food to the old food for pigs. He found the mean weigh
y y y y y y y y y y y y y


t gain for subjects consuming the new food to be 12.8 pounds wit
y y y y y y y y y y y y


h a standard deviation of 3.5 pounds. Later, he realized that the sc
y y y y y y y y y y y y


ale was out of calibration by 1.5 pounds (meaning that the scale
y y y y y y y y y y y y


weighed items 1.5 pounds more). What should be the summary
y y y y y y y y y y


measures, mean and standard deviation, for the subjects consum
y y y y y y y y


ing the new food? - y y y y


ANSWER-
The mean should be 11.3 and the standard deviation should rema
y y y y y y y y y y


in unchanged.
y




When a set of data has suspect outliers, which of the following is t
y y y y y y y y y y y y y


he referred measure of central tendency? - ANSWER-median
y y y y y y y




In a sample of 500 students whose mean height is 67.8 inches, 1
y y y y y y y y y y y y


50 were women. If the mean height of the women was 63.0 inch
y y y y y y y y y y y y


es, what is the mean height of the men in the sample? -
y y y y y y y y y y y y


yANSWER-69.9


The coefficient of variation formula - ANSWER-
y y y y y y


the standard deviation divided by the mean and multiplied by 10
y y y y y y y y y y


0.

Get to know the seller

Seller avatar
Reputation scores are based on the amount of documents a seller has sold for a fee and the reviews they have received for those documents. There are three levels: Bronze, Silver and Gold. The better the reputation, the more your can rely on the quality of the sellers work.
NurseMiriam University of Pennsylvania
View profile
Follow You need to be logged in order to follow users or courses
Sold
14
Member since
1 year
Number of followers
0
Documents
1107
Last sold
4 weeks ago
NurseAnn-M

Certified tutor, offering accurate, reliable, and current study materials to support students in their exam preparation and assignments. Aiming to provide the best resources, such as summaries, nursing exam test. Up-to-date exams and assignments, Detailed test banks with verified questions and answers, Elaborate exam solutions, Case studies and discussions Customized package deals tailored to your needs. I’m committed to providing only high-quality documents to ensure the best outcomes. Get instant access to expertly prepared materials designed to help you excel in your academic journey. Reach out today and take a step closer to achieving your goals! Always be Encouraged to leave a review after sale, all complements and comments, positive & Negative are appreciated to guide for better changes.

Read more Read less
4.5

2 reviews

5
1
4
1
3
0
2
0
1
0

Recently viewed by you

Why students choose Stuvia

Created by fellow students, verified by reviews

Quality you can trust: written by students who passed their tests and reviewed by others who've used these notes.

Didn't get what you expected? Choose another document

No worries! You can instantly pick a different document that better fits what you're looking for.

Pay as you like, start learning right away

No subscription, no commitments. Pay the way you're used to via credit card and download your PDF document instantly.

Student with book image

“Bought, downloaded, and aced it. It really can be that simple.”

Alisha Student

Frequently asked questions