Question 1

True or False: Data Mining can be said to be a process designed to detect patterns in data sets.

Select one:

• True
• False

The correct answer is 'True'.

Question 2

True or False: In unsupervised learning, the learning algorithm must be trained using data attributes that have been paired with an outcome variable.

Select one:

• True
• False

The correct answer is 'False'.

Question 3

True or False: Unsupervised learning involves building a statistical model for predicting, or estimating an output based upon one or more inputs.

Select one:

• True
• False

The correct answer is 'False'.

Question 4

Regression analysis involves developing a model where one or more inputs are used to predict an output variable. Regression, in this context, represents what kind of learning.

Select one:

• a. Reinforcement learning
• b. Supervised learning
• c. Unsupervised learning
• d. Hybrid Learning

The correct answer is: Supervised learning

Question 5

Assuming that we have a data set that includes sales data for every customer over the course of several years and we wanted to use this data to predict future sales which would be the most appropriate technique to investigate?

Select one:

• a. Classification
• b. Regression
• c. Clustering
• d. Decision Trees

The correct answer is: Regression

Question 6

Assume that you had a variety of data including medical history, diet, heredity factors on individuals who developed cancer and you wanted to use this data to determine whether a person is likely to develop cancer. Which technique would be the most promising to start with?

Select one:

• a. Classification
• b. Regression
• c. Clustering
• d. Estimation

The correct answer is: Classification

Question 7

Which of the following is an example of an unsupervised learning algorithm?

Select one:

• a. Linear Regression
• b. ID3 Decision Tree
• c. K-Means
• d. K-Nearest Neighbors

The correct answer is: K-Means

Question 8

True or False: A predication outcome variable must be categorical?

Select one:

• True
• False

The correct answer is 'False'.

Question 9

Which of the following is NOT a machine learning technique?

Select one:

• a. Regression
• b. Clustering
• c. Linear Components Analytics
• d. Neural Networks

The correct answer is: Linear Components Analytics

Question 10

True or False: In a supervised learning model, Bias refers to the error that is introduced from the assumptions of the data analyst.

Select one:

• True
• False

The correct answer is 'False'.

Question 11

The objective of ______ is to identify valid novel and potentially useful, and understandable correlations and patterns in existing data.

The correct answer is: data mining

Question 12

Which of the following is an example of a NOSQL Analytics database?

Select one:

• a. IBM DB2
• b. Oracle
• c. Cassandra
• d. Greenplum

The correct answer is: Cassandra

Question 13

What does ETL stand for?

The correct answer is: Extract transform load

Question 14

True or False: In a data warehouse, unidimensional data is stored in a star schema format.

Select one:

• True
• False

The correct answer is 'False'.

Question 15

The term OLAP stands for?

Select one:

• a. Online Applications Processing
• b. Online Analytical Processing
• c. Online Transactional Processing
• d. Online Limited Analytics Processing

The correct answer is: Online Analytical Processing

Question 16

A database where all of the values for a particular column are stored contiguously is called?

Select one:

• a. Column-oriented storage
• b. In memory database
• c. Partitioning
• d. Data Compression

The correct answer is: Column-oriented storage

Question 17

True or False: The snowflake schema differs from the star schema in that the table holding the dimensional data are normalized.

Select one:

• True
• False

The correct answer is 'True'.

Question 18

True or False: Map/Reduce refers to an optimized approach to process SQL queries.

Select one:

• True
• False

The correct answer is 'False'.

Question 19

True or False: Information Retrieval or text analytics is NOT a form of data mining.

Select one:

• True
• False The correct answer is 'False'.

Question 20

Which of the following is NOT a statistical processing software package?

Select one:

• a. SAS
• b. Minitab
• c. Vertica
• d. Mahout

The correct answer is: Vertica