The
Nonaccidental Statistic
For φ' not in the
set Φ we expect
μ'(z;
φ') ≠ μ(z; φ')
μ'(z;
φ') is the accidental statistic
for φ'
It is a measure of correlation between φ' and Φ
The “distance” (L1, L2,
or other) between μ'(z; φ') and
μ(z; φ') is the nonaccidental statistic
for φ'
It
is a measure of how much “additional information” φ' carries above what is already in
Φ