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\(\frac{∑f(x-x̄)}{N}\) Is a formula used to calculate for ____________

Economics
JAMB 2017
\(\frac{∑f(x-x̄)}{N}\)

Is a formula used to calculate for ____________
  • A. variance
  • B. the quartile
  • C. standard deviation
  • D. mean deviation
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Correct Answer: Option D
Explanation
where;
N = number of items in the distribution
X = is variable
x̄ = Arithmetic mean
∑ = sum of
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