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How to Add Various Error Contributions?
▪
For a simple criteria as a probability level of the minimum dose the
systematic error and random error are added linearly
▪
For various systematic errors and various random errors the errors (SDs)
should be
added in quadrature
:
▪
)10(9.10 3 3 10
2 2 2
2
2
2
= =S
SSS=S
c
b
a
Emphasis on large errors!