qiskit.ignis.verification.QVFitter.calc_confidence_level¶
-
QVFitter.calc_confidence_level(z_value)[source]¶ Calculate confidence level using z value.
Accumulative probability for standard normal distribution in [-z, +infinity] is 1/2 (1 + erf(z/sqrt(2))), where z = (X - mu)/sigma = (hmean - 2/3)/sigma
- Parameters
z_value (float) – z value in in standard normal distibution.
- Returns
confidence level in decimal (not percentage).
- Return type
float