BUAL 2650 EXAM 2 LEE CORRECT 100%

BUAL 2650 EXAM 2 LEE CORRECT
100%

Which of the following is
not true
regarding data mining? - ANSWERIt is one task within a process


The goal of which task is to predict categories? - ANSWERCassification

What is the problem of finding hidden structure in data without given an explicit
output variable
(unlabeled data)? - ANSWERUnsupervised Learning

Task of inferring a model from labeled training data is called - ANSWERsupervised
learning

Assume you want to perform supervised learning and to predict number of newborns
according to
size of storks' population, it is an example of - ANSWERRegression



Data mining is defined as a process of identifying valid, novel, potentially useful, and
understandable
patterns in data. What is the meaning of 'valid'? - ANSWERThe pattern should hold
true on new data.
Discriminating between spam and non-spam emails is a classification task (T/F) -
ANSWERTrue

Which of the following is an example of unsupervised learning - ANSWERClustering

CRISP-DM - ANSWERCross Industry Standard Process for Data Mining

Select the incorrect statement about prediction that is one of data mining tasks?
A) Two major types of predictions are classification and regression.
B) Supervised learning methods can be used for classification and regression.
C) Classification is used for predicting continuous outcome variables
D) Regression is used for predicting continuous outcome variables. -
ANSWERClassification is used for predicting continuous outcome variables.

(_______) is a task to segment data into groups that are not previously defined. -
ANSWERClustering

(_______) is a industry standard data mining process that is iterative in nature and
has 6 steps. - ANSWERCRISP-DM