____________is a method of extracting data relevant to the ...

[Shelles]

____________is a method of extracting data relevant to the business problem under consideration. It is the first step in the Data Mining process.
 a. Data sampling
  b. Data partitioning
  c. Model construction
  d. Model assessment

Question 2

Data preparation includes all of the following except which task?
 a. calculating the confidence ratio for all association rules b. treating missing data
  c. identifying erroneous data and outliers d. defining the appropriate way to represent variables

[ryhom]

Answer to Question 1

a
RATIONALE: Data sampling is a method extracting a sample of data that are relevant to the business problem under consideration. It is the first step in the Data Mining process.

Answer to Question 2

a
RATIONALE: Data preparation includes tasks such as treating missing data, identifying erroneous data and outliers, and defining the appropriate way to represent variables

[Shelles]

Gracias!

[daiying98]

Excellent