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Question 193 - DA0-001 discussion

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An analyst modified a data set that had a number of issues. Given the original and modified versions:

Which of the following data manipulation techniques did the analyst use?

A.
Imputation
Answers
A.
Imputation
B.
Recoding
Answers
B.
Recoding
C.
Parsing
Answers
C.
Parsing
D.
Deriving
Answers
D.
Deriving
Suggested answer: B

Explanation:

The correct answer is B. Recoding.

Recoding is a data manipulation technique that involves changing the values or categories of a variable to make it more suitable for analysis. Recoding can be used to simplify or group the data, to correct errors or inconsistencies, or to create new variables from existing ones12

In the example, the analyst used recoding to change the values of Var001, Var002, Var003, and Var004 from numerical to textual form. The analyst also used recoding to assign meaningful labels to the values, such as "Absent" for 0, "Present" for 1, "Low" for 2, "Medium" for 3, and "High" for 4.

This makes the data more understandable and easier to analyze.

asked 02/10/2024
Perry Schoenmaker
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