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CA Foundation · Quantitative Aptitude · Measures of Central Tendency and Dispersion

The geometric mean of the three observations 2, 4 and 16 is:

This item is flawed and should be disregarded.

  1. A4Correct
  2. B5.33
  3. C6
  4. D8

Explanation

GM = (2 × 4 × 16)^(1/3) = (128)^(1/3)? Check: 2×4×16 = 128, which is not a perfect cube, so the data must be rechecked. Using 2, 4 and 16 gives 128^(1/3) ≈ 5.04, which is not among the options.

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