JAMB - Economics (2017 - No. 41)
\(\frac{∑f(x-x̄)}{N}\)
Is a formula used to calculate for ____________
Is a formula used to calculate for ____________
variance
the quartile
standard deviation
mean deviation
Maelezo
where;
N = number of items in the distribution
X = is variable
x̄ = Arithmetic mean
∑ = sum of
N = number of items in the distribution
X = is variable
x̄ = Arithmetic mean
∑ = sum of