Two-way ANOVA for testing the null hypotheses that several univariate samples have the same mean across each of two factors. This module expects only one observation for each combination of levels for the two factors. The input data format is a table where the first factor levels enter in rows, and the second factor level in columns, e.g. a table of veterinary lab results:
There is no interaction term. The equations are given by Ireland (2010), pp. 130-131.
Reference
Ireland, C.R. 2010. Experimental Statistics for Agriculture and Horticulture. CABI, 352 pp.