BIO Stat Wk 10

For an experiment that includes physical blocks, a between block factor is a factor whose value is fixed within any one block so that it only varies between blocks

An analysis suffers from this if a between blocks factor is tested against an estimate of the within block error variance. This reflects an improper analysis not necessarily a poor experimental design.

Factor B is nested under factor A if each level of factor B is found in combination with only one level of factor A

An experimental design that includes physical blocks and has both a within-block (sub-plot) factor and a between-block (main-plot) factor.

Is a split-plot design in which all main plots are randomized across all physical blocks.

An experimental design in which the response variable is measured more than once on each experimental unit.

A split plot design in which physical blocks are divided into as many sub blocks as three are levels to the main plot factor.