Short answer:

a) (How many separate groups (treatments) would be needed for a two-factor study with three levels of factor A and four levels of factor B?)

b)(A researcher who is examining the effect of temperature and humidity on growth of lowland cabbage uses a factorial experiment, comparing three different temperatures (70C, 80C, 90C) and two humidity conditions (low and high). How many factors are there in the experiment?)

c) (When you key in the data in Excel for instance, each cell in the matrix corresponds to _____)

d)(How many combinations of factors are there in a 2x3 factorial design?)

e)(A ________ is necessary to determine whether the main factor effect is significant or not)

f)(When the effect of one factor depends on the different levels of the second factor, this situation indicate __________)

g)(For a two-factor factorial experiment, how would the analysis of variance looks like?)

h)(How many independent variables (factors) are there in a 2x2x2 factorial design?)