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QBA FINAL EXAM STUDY GUIDE 2026-
COMPREHENSIVE Q&A FOR CERTIFICATION
SUCCESS
When a decision maker is faced with several alternatives and an uncertain set of
future events, s/he uses __________ to develop an optimal strategy. - correct-
answer -Decision analysis
A forecast that helps direct police officers to areas where crimes are likely to occur
based on past data is an example of - correct-answer -Predictive Analytics
Tactical decisions are concerned with - correct-answer -how the organization
should achieve the goals and objectives set by its strategy
In the spectrum of business analytics, which is the most complex? - correct-
answer -Prescriptive
Which of the following analytical techniques helps us arrive at the best decision? -
correct-answer -Prescriptive
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Which of the following gives the proportion of items in each bin? - correct-answer
-Relative frequency
The variance is based on the - correct-answer -deviation about the mean
Compute the IQR for the following data. - correct-answer -9.50
Use technology to compute the standard deviation for the following sample data.
- correct-answer -6.75
Scores on Ms. Nash's test have a mean of 64 and a standard deviation of 9. Steve
has a score of 52. Convert Steve's score to a z-score. (Round to two decimal places
if necessary.) - correct-answer --1.33
When clustering only by dummy variables that represent categorical variables, the
simplest measure of similarity between two observations is called the - correct-
answer -Matching coefficient
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The endpoint of a k-means clustering algorithm occurs when - correct-answer -no
further changes are observed in cluster structure and number.
Single linkage is a measure of calculating dissimilarity between clusters by -
correct-answer -considering only the two most similar observations in the two
clusters.
Which of the following is a discrete random variable? - correct-answer -The
number of times a student guesses the answers to questions on a certain test
The number of minutes that Samantha waits to catch the bus is uniformly
distributed between 0 and 15 minutes. What is the probability that Samantha has
to wait less than 4.5 minutes to catch the bus? - correct-answer -30%
Determine whether the alternative hypothesis is left-tailed, right-tailed, or two-
tailed: H0: μ = 11, Ha: μ > 11. - correct-answer -Right tailed
The value of the ___________ is used to estimate the value of the population
parameter. - correct-answer -Sample statistic
QBA FINAL EXAM STUDY GUIDE 2026-
COMPREHENSIVE Q&A FOR CERTIFICATION
SUCCESS
When a decision maker is faced with several alternatives and an uncertain set of
future events, s/he uses __________ to develop an optimal strategy. - correct-
answer -Decision analysis
A forecast that helps direct police officers to areas where crimes are likely to occur
based on past data is an example of - correct-answer -Predictive Analytics
Tactical decisions are concerned with - correct-answer -how the organization
should achieve the goals and objectives set by its strategy
In the spectrum of business analytics, which is the most complex? - correct-
answer -Prescriptive
Which of the following analytical techniques helps us arrive at the best decision? -
correct-answer -Prescriptive
,2|Page
Which of the following gives the proportion of items in each bin? - correct-answer
-Relative frequency
The variance is based on the - correct-answer -deviation about the mean
Compute the IQR for the following data. - correct-answer -9.50
Use technology to compute the standard deviation for the following sample data.
- correct-answer -6.75
Scores on Ms. Nash's test have a mean of 64 and a standard deviation of 9. Steve
has a score of 52. Convert Steve's score to a z-score. (Round to two decimal places
if necessary.) - correct-answer --1.33
When clustering only by dummy variables that represent categorical variables, the
simplest measure of similarity between two observations is called the - correct-
answer -Matching coefficient
, 3|Page
The endpoint of a k-means clustering algorithm occurs when - correct-answer -no
further changes are observed in cluster structure and number.
Single linkage is a measure of calculating dissimilarity between clusters by -
correct-answer -considering only the two most similar observations in the two
clusters.
Which of the following is a discrete random variable? - correct-answer -The
number of times a student guesses the answers to questions on a certain test
The number of minutes that Samantha waits to catch the bus is uniformly
distributed between 0 and 15 minutes. What is the probability that Samantha has
to wait less than 4.5 minutes to catch the bus? - correct-answer -30%
Determine whether the alternative hypothesis is left-tailed, right-tailed, or two-
tailed: H0: μ = 11, Ha: μ > 11. - correct-answer -Right tailed
The value of the ___________ is used to estimate the value of the population
parameter. - correct-answer -Sample statistic
