mqr.msa.

VarianceTable

class mqr.msa.VarianceTable(grr: GRR, typ=2)

GRR variance components

Variance components are calculated using the method in [1].

Attributes:

grrGRR

GRR study object used to create the variance components.

anova_tablepandas.DataFrame, automatic

ANOVA summary table.

tablepandas.DataFrame

Table of variance components from GRR model.

num_distinct_catfloat

Number of confidence intervals on part measurements that will span the part variability (without overlap). For example, if num_distinct_cat is 5 then the measurement system can discern five groups of parts.

discriminationfloat

Discrimination ratio, see [1].

References

[1] (1,2)

Montgomery, D. C. (2009). Statistical quality control (Vol. 7). New York: Wiley.