Multiple choice

Find the coefficient of variation of a sample which has mean equal to 25 and standard deviation of 5.

  1. $10\%$
  2. $20\%$
  3. $5\%$
  4. $15\%$
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B Correct answer
Explanation

The coefficient of variation is calculated as (standard deviation / mean) * 100. Here, (5 / 25) * 100 = 0.2 * 100 = 20%.

AI explanation

The coefficient of variation is calculated using the formula (standard deviation divided by mean) multiplied by 100. Substituting the given values gives (5 divided by 25) multiplied by 100. This simplifies to 0.2 multiplied by 100, resulting in a coefficient of variation of 20%.

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