In data modeling, what is the term for the process of creating new features or variables from existing data attributes?

Read the following sentences and choose the correct option. (i) Variables can only take discrete values while Attributes can take continuous values. (ii) Variables can only take continuous values while Attributes take discrete value. (iii) Attributes and variables are dependent on each other. (iv) Width of an impeller blade is a variable but no. of defective blades in a lot is an attribute.

A

(i) and (iii) are correct

B

(i)and (iii) are incorrect

C

Only (i) is correct

D

(i), (ii), (iii) and (iv)

In data modeling, what is the term for the process of selecting relevant features or attributes for a specific task?

A

Data Aggregation

B

Data Cleaning

C

Feature Selection

D

Data Transformation

In data modeling, what is the term for the process of converting categorical data into numerical format for modeling purposes?

A

Data Aggregation

B

Data Cleaning

C

Data Encoding

D

Data Transformation

In machine learning, what is the term for the process of selecting the most important features or variables for modeling purposes?

A

Data Sampling

B

Data Wrangling

C

Feature Engineering

D

Data Reduction

In data modeling, what is the term for the process of selecting the most relevant data attributes for model building?

A

Data Aggregation

B

Data Cleaning

C

Feature Selection

D

Data Transformation

In data modeling, what is the term for the process of reducing the dimensionality of data while preserving its important features?

A

Data Imputation

B

Data Reduction

C

Feature Engineering

D

Data Normalization

You are working on a new project to develop a new wireless product with ease - of - use features recommended by customers. It is as yet undetermined which features and the extent to which each feature will be incorporated into the product.You have a focus group that will continue to evaluate the features as the project goes forward.The focus group is authorized to suggest changes, as are your engineers and the quality department.As a project manager, what will help you most to minimize the effect of these changes?

A

A change management plan

B

A scope management plan

C

Do not continue with the project until all of the features are clearly defined in the scope statement and scope definition.

D

This is an expected part of every project. A good project manager will have a communications plan in place to be sure everyone knows what is happening on the project.

________ add new variables/columns or transform existing variables.

A

mutate

B

add

C

apped

D

arrange

. . . . . . . . add new variables/columns or transform existing variables.

A

mutate

B

add

C

apped

D

arrange

When variables refer to attributes of an entity (such as name, address, and phone number of a person), those attributes form a _____

A

file

B

record

C

field

D

program

In data modeling, what is the term for the process of creating new features or variables from existing data attributes?

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