Which one of the following is not a central tendency?
Options
AMean Deviation
BArithmetic mean
CMedian
DMode
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Measures of Central Tendency and DispersionMCQPYQ May 18Question 2858 of 473
All Questions Correct Answer
✅ Option a — Mean Deviation
All Options:
- AMean Deviation
- BArithmetic mean
- CMedian
- DMode
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Detailed Solution & Explanation
**Step 1: Identify measures of central tendency.**
Measures of central tendency locate the center of a data set:
- **Arithmetic Mean**: sum divided by number of items.
- **Median**: middle value when data is sorted.
- **Mode**: most frequently occurring value.
**Step 2: Identify Mean Deviation.**
**Mean Deviation** measures the average of absolute deviations of observations from the mean or median. It is a measure of **dispersion** (spread), NOT central tendency.
**Conclusion:** Mean Deviation is NOT a measure of central tendency.
Hence, **Option A** is the correct answer.
About This Chapter: Measures of Central Tendency and Dispersion
Paper
Paper 3: Quantitative Aptitude
Weightage
12-15 Marks
Key Topics
Mean, Median, Mode, Range, Mean Deviation, Standard Deviation
The core foundation of Statistics. This chapter covers Mean (Arithmetic, Geometric, Harmonic), Median, Mode, and their properties. It also explores measures of spread like Range, Mean Deviation, Standard Deviation, and Quartile Deviation.
View Official ICAI SyllabusExam Strategy Tip
Do not just memorize formulas; ICAI loves asking about the mathematical properties (e.g., 'sum of deviations from the AM is always zero'). You can usually eliminate 2 options just by knowing the properties.
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