Table 1 Formulas and values involved in plotting the learning curve cumulative summation test
Variable | Value |
|---|---|
ρ0, unacceptable failure rate | 0.4 |
ρ1, acceptable failure rate | 0.2 |
α, probability of the type I error | 0.05 |
β, probability of the type II error | 0.2 |
P = ln(ρ1/ ρ0) | −0.6932 |
Q = ln[(1 – ρ0)/(1 – ρ1)] | −0.2877 |
S = Q/(P + Q) | 0.2933 |
1-S | 0.7067 |
a = ln[(1 – β)/α] | 2.77 |
h = a/(P + Q), decision limit | −2.83 |