JAMB Economics 2016 Objective — Question 16
Question 16 of 40 from the Joint Admissions and Matriculation Board (JAMB) Economics 2016 Objective paper, with the correct answer and a full explanation.
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The appropriate formula for the computation of standard deviation of a grouped data is
- A. S = sqrt(Σ(x-x̄))/n
- B. S = sqrt(x-x̄)/n
- C. sqrt(Σf(x-x̄))/n
- D. sqrt(Σf(x-x̄)^2)/nCorrect
Explanation
The correct formula for standard deviation of grouped data is S = √(Σf(x-x̄)²/n).
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