Measures of Central Tendency and DispersionMCQPYQ May 18Question 2855 of 473
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The average of a series of overlapping averages, each of which is based on a certain number of item within a series is know as.

Options

AMoving average
BWeighted average
CSimple average
DNone of these
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Correct Answer

✅ Option a — Moving average

All Options:

  • AMoving average
  • BWeighted average
  • CSimple average
  • DNone of these

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Detailed Solution & Explanation

**Step 1: Understand the definition.** A **Moving Average** is computed by taking averages of successive overlapping groups of a fixed number of items from a time series. Each average overlaps with the previous one by sharing some common items. **Step 2: Elimination of wrong options.** - Weighted average assigns different weights to different items — not relevant here. - Simple average is the ordinary mean of all items — not overlapping groups. - None of these is incorrect since the answer is Moving Average. **Step 3: Conclusion.** The correct term is **Moving Average**. 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 Syllabus

Exam 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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