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BUAN 4310 Midterm Questions with Correct Answers.
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BUAN 4310 Midterm Questions with Correct Answers.
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BUAN 4310 Midterm Questions with Correct AnswersWhat part of the data mining process takes the most time? Correct
Answer-Exploratory Data Analysis
The purpose of sampling is to _____________________. Correct
Answer-Obtain sufficient information to draw a valid inference about a
population.
In data mining, classification is _______________________. Correct
Answer-a division of a set of examples into a number of categories.
What is one appropriate strategy when the data set is too small for
partitioning? Correct Answer-Cross-validation
Unsupervised or supervised learning?
Automated sorting of mail by scanning envelopes to identify the zip
code that is written in the address. Correct Answer-Supervised
Is this statement true?
"Predictive analytics utilise both classification and prediction models"
Correct Answer-True.
, Which type of data allows for meaningful comparison of ranges,
averages and other statistics? Correct Answer-Interval data
True or false?
An outlier is an observation that is "extreme", being distant from the rest
of the data. Correct Answer-True
Which of the following is a disadvantage of ordinal data? Correct
Answer-They have no fixed units of measurement.
Which of the following are likely causes of overfitting?
(i) Too many predictors
(ii) Too many parameters
(iii) Combining many different models Correct Answer-All of these.
In data mining, a cluster is... Correct Answer-A group of similar records
that differ significantly from other records.
Solve the problem
A manager at Gampco Inc. wishes to know the company's revenue and
profit in its previous quarter. Which type of business analytics will help
the manager? Correct Answer-descriptive analytics
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