DA0-001 Exam Dumps | A data analyst who works for a government agency is required to obtain the average income of citizens.

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CompTIA.DA0-001.v2025-09-09.q149
Question 140

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Question 140/149

A data analyst who works for a government agency is required to obtain the average income of citizens. The list of citizens is given in the following table:

A value for one citizen's income is missing. Which of the following approaches should the data analyst take to solve this issue?

A. Replace the missing value with the average of the rest of the unemployed citizens.

B. Insert the value 0 into the field with the missing value.

C. Impute the mean of the other citizens' incomes into the field with the missing value.

D. Exclude employed citizens from the analysis.

Correct Answer: C

Comprehensive and Detailed In-Depth
Handling missing datais crucial for maintaining the integrity of an analysis. Since the missing value belongs to anemployedindividual, the most appropriate method is toimpute the mean income of employed citizens.
Option A (Replace the missing value with the average of unemployed citizens):Incorrect. The missing income is for anemployedindividual, so it would be inappropriate to use the unemployed citizens' average.
Option B (Insert 0):Incorrect. Assigning 0 would be misleading since it does not reflect the income distribution for employed citizens.
Option C (Impute the mean of the other citizens' incomes):Correct.A common practice in data analytics ismean imputation, where missing values are replaced with the mean of similar cases (in this case, other employed citizens).
Option D (Exclude employed citizens from the analysis):Incorrect. This would remove valuable data and lead to biased results.

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