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Measures of Dispersion — Economics STD 11 Commerce — Question

CBSE BoardEnglish MediumSTD 11 CommerceEconomicsMeasures of Dispersion3 Marks
Question
Give the formulae for computing:
  1. Coefficient of Standard Deviation.
  2. Coefficient of Variation.
  3. Variance.
✓

Answer

Formulae for computing:
  1. Coefficient of Standard Deviation $=\frac{\sigma}{\bar{\text{X}}}$
  2. Coefficient of Variation $=\frac{\sigma}{\bar{\text{X}}}\times100$
  3. Variance $=\sigma^2,$ where
$\sigma=$ Standard deviation
$\bar{\text{X}}=$ Arithmetic mean

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