0 1 2 3 4 5 6 0 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 1.1 0 Probability Random Variable ν = 1 ν = 3, (ξ = 1/3) ν = 1, ξ = 1 ν = 4, (ξ = 1/4) ν = 3, (ξ = 1/5 Inverse Chi Squared Distribution CDF