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Exam (elaborations)

DSCI 4520 EXAM 1 REVIEW EXAM ACTUAL QUESTIONS AND ANSWERS
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13

January 2026

2025/2026

A+
DSCI 4520 EXAM 1 REVIEW EXAM ACTUAL QUESTIONS AND ANSWERS Which statement about the data mining process is INCORRECT? - No value presents in raw, unprocessed, and unactionable data - Data cleaning and pre-processing is usually a trivial step in the process - The overall objective of any data mining process is to improve the business - Data mining is a multidisciplinary field that makes a significant use of statistics - CORRECT ANSWER- Data cleaning and pre-processing is usually a trivial ...
STANGRADES
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Package deal

DSCI 4520 BUNDLED QUESTIONS WITH CORRECT ANSWERS LATEST UPDATE 2025/2026
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3

November 2025
DSCI 4520 BUNDLED QUESTIONS WITH CORRECT ANSWERS LATEST UPDATE 2025/2026
joshuawesonga22
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Exam (elaborations)

DSCI 4520 EXAM 3 QUESTIONS WITH CORRECT ANSWERS LATEST UPDATE 2025/2026
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5

November 2025

2025/2026

A+
DSCI 4520 EXAM 3 QUESTIONS WITH CORRECT ANSWERS LATEST UPDATE 2025/2026 Assume that for a user-based collaborative recommender system the similarity scores are being calculated for five customers who have rated five brands of tea products: Ratings of which two customers are better to be used for predicting Customer 5's rating of the Celestial Tea products? - Customers 2 and 3 - Customer 4 and 1 - Customer 3 and 1 - Customer 2 and 1 - Answers Customers 2 and 3 Which of the followi...
joshuawesonga22
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Exam (elaborations)

DSCI 4520 Exam 2 Questions with Verified Solutions Graded A+f
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12

November 2025

2025/2026

A+
Available in bundle
DSCI 4520 Exam 2 Questions with Verified Solutions Graded A+ What statement is INCORRECT about the k-nearest neighbor (k-NN) method? A) Different k value can change the performance of the classifier B) Too small value for k may lead to over-fitting C) When k=1 (closest record) the classifier performance is maximum D) k is an arbitrary number that can be selected by trial-and-error - Answers C) The main difference between k-NN classifiers and k-NN regression models is that the former does...
joshuawesonga22
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Exam (elaborations)

DSCI 4520 Exam 1 Questions with Correct Answers Latest Update 2025/2026
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19

November 2025

2025/2026

A+
Available in bundle
DSCI 4520 Exam 1 Questions with Correct Answers Latest Update 2025/2026 Which statement about business intelligence workflow is CORRECT? A. Business users and BI analysts are usually the same group of people B. External data sources are never used in the BI analytics C. Data in the operational database is transformed to analytical data in the data warehouse D. Transactional data software is directly connected to data warehouse - Answers Data in the operational database is transformed to ana...
joshuawesonga22
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Exam (elaborations)

DSCI 4520 Final Exam Questions with Correct Answers Latest Update 2025/2026
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10

November 2025

2025/2026

A+
Available in bundle
DSCI 4520 Final Exam Questions with Correct Answers Latest Update 2025/2026 Which statement about the data mining process is INCORRECT? - Answers Data cleaning and pre-processing is usually a trivial step in the process According to the data-driven decision-making technology pyramid shown in the following figure, which statement is FALSE? - Answers The process only moves in one direction (upward) and higher layers never give feedback to the lower layers Which statement is FALSE about the data...
joshuawesonga22
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Package deal

DSCI 4520 Bundled Questions and Answers Solved Correctly
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6

June 2025
DSCI 4520 Bundled Questions and Answers Solved Correctly Latest Update 2025/2026
TutorJosh
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Exam (elaborations)

DSCI 4520 - Data Mining Exam I Review Questions and Answers Solved Correctly
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2

June 2025

2024/2025

A+
DSCI 4520 - Data Mining Exam I Review Questions and Answers Solved Correctly Dimension - Answers ________ refers to the # of input variables (degrees of freedom). Over-fitting - Answers ________ is caused by an overly complex model that is too flexible; can also mean a situation in which there are too many variables in your model. "Which split is best?" - Answers ___________ refers to the Splitting Criteria method. Splitting Criteria methods - Answers The ___________ that are most wid...
TutorJosh
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Exam (elaborations)

DSCI 4520 Quiz 4 Questions Answered Correctly Graded A+
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3

June 2025

2024/2025

A+
Available in bundle
DSCI 4520 Quiz 4 Questions Answered Correctly Graded A+ One of the advantages of naive Bayes classification models is the ease of training and interpreting. - Answers True If events A and B are statistically independent, what is P(A|B), that is the conditional probability of A, given B? - Answers P(A) Statistical independence for two events is present when the outcome of the first event has no impact on the probability of the second event - Answers True With the Naive Bayes classification me...
TutorJosh
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