Question 1

What is regression?

Accepted Answer

Regression is a statistical process for estimating the relationships among variables.

Question 2

What is optimization?

Accepted Answer

Optimization is a statistical process that finds the way to make a design, system, or decision as effective as possible; for example, finding the values of controllable variables that determine maximal productivity or minimal waste.

Question 3

What is another term for data that is already contained in a database or a spreadsheet?

Accepted Answer

Structured data is another term for data that is already contained in a database or a spreadsheet.

Question 4

What is a statistical process that finds the way to make a design, system, or decision as effective as possible; for example, finding the values of controllable variables that determine maximal productivity or minimal waste?

Accepted Answer

Optimization is a statistical process that finds the way to make a design, system, or decision as effective as possible; for example, finding the values of controllable variables that determine maximal productivity or minimal waste.

Question 5

What determines which things go together?

Accepted Answer

Affinity grouping determine which things go together.

Question 6

What is a statistical process for estimating the relationships among variables?

Accepted Answer

Regression is a statistical process for estimating the relationships among variables.

Question 7

What are forecasts?

Accepted Answer

Forecasts are predictions based on time-series information.

Question 8

What are predictions based on time-series information?

Accepted Answer

Forecasts are predictions based on time-series information.

Question 9

What is affinity grouping?

Accepted Answer

Affinity grouping determine which things go together.

Question 10

What assigns records to one of a predefined set of classes?

Accepted Answer

Classification assigns records to one of a predefined set of classes.

Question 11

Which of the following forms of data mining assigns records to one of a predefined set of classes?

Accepted Answer

Classification assigns records to one of a predefined set of classes.

Question 12

Which of the following is not a common form of data mining analysis?

Accepted Answer

Data mining approaches decision making with a few different activities in mind include classification, estimation, affinity grouping, and clustering.

Question 13

What is structured data?

Accepted Answer

Structured data has a defined length, type, and format and includes numbers, dates, or strings such as Customer Address.

Question 14

What is estimation?

Accepted Answer

Estimation determines values for an unknown continuous variable behavior or estimated future value.

Question 15

What segments a heterogeneous population of more homogeneous subgroups?

Accepted Answer

Clustering segments a heterogeneous population of more homogeneous subgroups.

Question 16

What is a statement about what will happen or might happen in the future; for example, predicting future sales or employee turnover?

Accepted Answer

Prediction is a statement about what will happen or might happen in the future; for example, predicting future sales or employee turnover.

Question 17

What is classification?

Accepted Answer

Classification assigns records to one of a predefined set of classes.

Question 18

What is clustering?

Accepted Answer

Clustering segments a heterogeneous population of more homogeneous subgroups.

Question 19

What determines values for an unknown continuous variable behavior or estimated future value?

Accepted Answer

Estimation determines values for an unknown continuous variable behavior or estimated future value.

Question 20

Which of the following uses a variety of techniques to find patterns and relationships in large volumes of information that predict future behavior and guide decision making?

Accepted Answer

Data-mining tools uses a variety of techniques to find patterns and relationships in large volumes of information that predict future behavior and guide decision making.

Quiz 6: Data: Business Intelligence

What is regression?

What is optimization?

What is another term for data that is already contained in a database or a spreadsheet?

What is a statistical process that finds the way to make a design, system, or decision as effective as possible; for example, finding the values of controllable variables that determine maximal productivity or minimal waste?

What determines which things go together?

What is a statistical process for estimating the relationships among variables?

What are forecasts?

What are predictions based on time-series information?

What is affinity grouping?

What assigns records to one of a predefined set of classes?

Which of the following forms of data mining assigns records to one of a predefined set of classes?

Which of the following is not a common form of data mining analysis?

What is structured data?

What is estimation?

What segments a heterogeneous population of more homogeneous subgroups?

What is a statement about what will happen or might happen in the future; for example, predicting future sales or employee turnover?

What is classification?

What is clustering?

What determines values for an unknown continuous variable behavior or estimated future value?

Which of the following uses a variety of techniques to find patterns and relationships in large volumes of information that predict future behavior and guide decision making?