Geometric Mean Return - ANS {(1+R₁)×(1+R₂)××(1+Rₙ)}^(1/n)
Harmonic Mean - ANS = N / ∑(1/xi)
Weighted Mean - ANS =∑wiXi
Position of Observation at Given Percentile, y - ANS Ly = (n+1) (y/100)
Excess Kurtosis - ANS = Sample Kurtosis - 3
MAD - ANS ∑|Xi-Xbar| /n
Population Variance - ANS σ² = ∑(Xi-µ)² /n
Sample Variance - ANS s² = ∑(Xi-Xbar)² /n-1
Coefficient of Variation - ANS CV = standard deviation of x / average value of x
Joint Probability: P(AB) - ANS = P(A|B) × P(B)
Addition Rule: P(A or B) - ANS = P(A) + P(B) - P(AB)
Multiplication Rule: P(A and B) - ANS = P(A) × P(B)
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