Analysis of variance for 1 and 2 factors 
Analysis of Variance, ANOVA for 1 factor
One factor analysis of variance (ANOVA) analyses possible influence of
a selected factor (a nonnumeric circumstance that can possibly
influence the result of some measured response, such as supplier, name
of operator, number of workshift, day in a week). Analysis include
plots, diagnostics, statistical tests and exhaustive text output.
Analysis of Variance, ANOVA for 2 factors
Anova for 2 factors is an extension of one factor Anova. It analyses
influence of two selected factors on numeric response. Factors may be
any reasonable nonnumeric information such as supplier, name of
operator, number of workshift, day in a week, name of laboratory or
production line. Analysis include plots, diagnostics, statistical tests
and exhaustive text output.
