QMB 3200 FINAL EXAM PREP TEST BANK LATEST 2025
WITH 180 EXAM QUESTIONS AND CORRECT
ANSWERS/ UCF QMB 3200 FINAL EXAM 2025 PREP
TEST BANK (NEW!)
Suppose we have the following data: 12, 17, 13, 25, 16, 21, 30, 14, 16, and 18. To find the 10%
trimmed mean, what numbers should be deleted from the calculation? - answer-12 and 30
Which of the following is not resistant to the outliers in a data set?
a. Median
b. Mean
c. Variance
d. Interquartile range - answer-b. mean
The pth percentile is a value such that at least p percent of the observations are: - answer-less
than or equal to this value.
A student was performing an experiment that compared a new high protein food to the old food for
pigs. He found the mean weight gain for subjects consuming the new food to be 12.8 pounds with a
standard deviation of 3.5 pounds. Later, he realized that the scale was out of calibration by 1.5
pounds (meaning that the scale weighed items 1.5 pounds more). What should be the summary
measures, mean and standard deviation, for the subjects consuming the new food? - answer-The
mean should be 11.3 and the standard deviation should remain unchanged.
When a set of data has suspect outliers, which of the following is the referred measure of central
tendency? - answer-median
In a sample of 500 students whose mean height is 67.8 inches, 150 were women. If the mean height
of the women was 63.0 inches, what is the mean height of the men in the sample? - answer-69.9
The coefficient of variation formula - answer-the standard deviation divided by the mean and
multiplied by 100.
, The summary statistics for the hourly wages of a sample of 130 system analysts are given below:
Mean = 60
Range = 20
Mode = 73
Variance = 324
Median = 74
The coefficient of variation is equal to: - answer-(square root 324/ 60 x100)= 30%
If the variance of a data set is correctly computed with the formula using in the denominator, which
of the following is true?
a. The data set is a population.
b. The data set is adjusted for skewness.
c. The data set is too small.
d. The data set is a sample. - answer-d. The data set is a sample.
In a sample of size five, the mean is 23 and four of the observations have the following deviations
from the mean: -6, 2, 5, and 3. What is the value of the fifth observation? - answer--4
There are three executives in an office with age 56, 57, and 58. If a 57-year-old executive enters the
room, then: - answer-the mean age will stay the same, but the variance will decrease.
The difference between the largest and the smallest data values is the: - answer-range
The interquartile range is: - answer-the difference between Q3 and Q1, the third and first quartiles.
The standard deviation of a sample was reported to be 20. The report indicated that Σ (xi-x̄)^2 =
7200. What is the sample size? - answer-20-1 = 19
WITH 180 EXAM QUESTIONS AND CORRECT
ANSWERS/ UCF QMB 3200 FINAL EXAM 2025 PREP
TEST BANK (NEW!)
Suppose we have the following data: 12, 17, 13, 25, 16, 21, 30, 14, 16, and 18. To find the 10%
trimmed mean, what numbers should be deleted from the calculation? - answer-12 and 30
Which of the following is not resistant to the outliers in a data set?
a. Median
b. Mean
c. Variance
d. Interquartile range - answer-b. mean
The pth percentile is a value such that at least p percent of the observations are: - answer-less
than or equal to this value.
A student was performing an experiment that compared a new high protein food to the old food for
pigs. He found the mean weight gain for subjects consuming the new food to be 12.8 pounds with a
standard deviation of 3.5 pounds. Later, he realized that the scale was out of calibration by 1.5
pounds (meaning that the scale weighed items 1.5 pounds more). What should be the summary
measures, mean and standard deviation, for the subjects consuming the new food? - answer-The
mean should be 11.3 and the standard deviation should remain unchanged.
When a set of data has suspect outliers, which of the following is the referred measure of central
tendency? - answer-median
In a sample of 500 students whose mean height is 67.8 inches, 150 were women. If the mean height
of the women was 63.0 inches, what is the mean height of the men in the sample? - answer-69.9
The coefficient of variation formula - answer-the standard deviation divided by the mean and
multiplied by 100.
, The summary statistics for the hourly wages of a sample of 130 system analysts are given below:
Mean = 60
Range = 20
Mode = 73
Variance = 324
Median = 74
The coefficient of variation is equal to: - answer-(square root 324/ 60 x100)= 30%
If the variance of a data set is correctly computed with the formula using in the denominator, which
of the following is true?
a. The data set is a population.
b. The data set is adjusted for skewness.
c. The data set is too small.
d. The data set is a sample. - answer-d. The data set is a sample.
In a sample of size five, the mean is 23 and four of the observations have the following deviations
from the mean: -6, 2, 5, and 3. What is the value of the fifth observation? - answer--4
There are three executives in an office with age 56, 57, and 58. If a 57-year-old executive enters the
room, then: - answer-the mean age will stay the same, but the variance will decrease.
The difference between the largest and the smallest data values is the: - answer-range
The interquartile range is: - answer-the difference between Q3 and Q1, the third and first quartiles.
The standard deviation of a sample was reported to be 20. The report indicated that Σ (xi-x̄)^2 =
7200. What is the sample size? - answer-20-1 = 19
