staitics mathematics
formula
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MedianIf n is odd, then
M = (n+12)(n+12)thth term
If n is even, then
M = (n2)thterm+(n2+1)thterm2(n2)thterm+(n2+1)thterm2n = Total number of itemsModeThe value which occurs most frequentlyVarianceσ2σ2 = ∑(x−barx)2n∑(x−barx)2nx = Items given
barxbarx = Mean
n = Total number of itemsStandard DeviationS=σ=∑(x−barx)2n
M = (n+12)(n+12)thth term
If n is even, then
M = (n2)thterm+(n2+1)thterm2(n2)thterm+(n2+1)thterm2n = Total number of itemsModeThe value which occurs most frequentlyVarianceσ2σ2 = ∑(x−barx)2n∑(x−barx)2nx = Items given
barxbarx = Mean
n = Total number of itemsStandard DeviationS=σ=∑(x−barx)2n
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mean formula x= sigma fixi / sigma fi
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