If G is the G.M. of the product of r sets of observations. With geometric means G1, G2, G3, ……………, Gr respectively, then find the value of G?

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RRC Group D Previous Paper 33 (Held On: 3 Oct 2018 Shift 2)
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  1. logG1 + logG2 + … logGr
  2. G1. G2 …… Gr
  3. G1 + G2 + ….. + Gr
  4. logG1. logG2 ….. logGr

Answer (Detailed Solution Below)

Option 2 : G1. G2 …… Gr
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RRB Group D Full Test 1
100 Qs. 100 Marks 90 Mins

Detailed Solution

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Concept:

Geometric mean: The value which indicates the central tendency by using the product of the values of a set of numbers.

Formula: GM = (Product of all numbers in the set)1/n

Where, n = total numbers in the set

Example: 2, 3, 4, 5

GM = (2 × 3 × 4 × 5)1/4 = (120)1/4

Calculation:

G = G1 × G2 × G3 ……………….. × Gr

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