According to Claudio in clbustos/statsample#11, tests in which any vector of responses for a specific item has zero variance should be considered a mistake, at least in a strict_mode.
So: implement a strict_mode flag that raises a Statsample::ZeroVarianceVectorException (feel free to choose a better name) if any of the vectors in cronbach_alpha has zero variance.
According to Claudio in clbustos/statsample#11, tests in which any vector of responses for a specific item has zero variance should be considered a mistake, at least in a
strict_mode.So: implement a
strict_modeflag that raises aStatsample::ZeroVarianceVectorException(feel free to choose a better name) if any of the vectors incronbach_alphahas zero variance.