For a dataset with extreme outliers, which measure of central tendency is LEAST affected? MCQ with Answer and Explanation

For a dataset with extreme outliers, which measure of central tendency is LEAST affected?
A. Median
B. Arithmetic mean
C. Mode
D. Geometric mean
Answer: Option A
Solution (By JKSSB Mock Tests)
The median depends only on the middle value(s) in an ordered list, making it robust to extreme values, whereas the mean incorporates all values and can be heavily distorted by outliers.

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Practice More Statistics Questions

Question #1
In questionnaire design, what is the primary purpose of pre-testing?
A. To calculate the budget for data collection
B. To finalize the sample size for the survey
C. To select the mode of administration for the questionnaire
D. To identify ambiguous questions and improve clarity before full deployment

Correct Answer: Option D


Explanation:
Pre-testing a questionnaire with a small pilot group helps detect unclear wording, logical flaws, or response issues, ensuring the instrument is valid and reliable for the main survey.

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Question #2
The Family Budget Method for calculating the Consumer Price Index is equivalent to:
A. Fisher's Method
B. Simple Aggregative Method
C. Laspeyres' Method
D. Paasche's Method

Correct Answer: Option C


Explanation:
The family budget method (weighted average of price relatives) mathematically reduces to Laspeyres' formula (using base year weights).

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Question #3
Consider the following: 1. CPI-IW is compiled by Labour Bureau. 2. CPI-Rural, Urban, Combined base year is 2012. 3. CPI basket includes both goods and services. Which of the above is/are correct?
A. 1 and 2 only
B. 2 and 3 only
C. 1, 2 and 3
D. 1 and 3 only

Correct Answer: Option C


Explanation:
All three statements are factually correct.

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