10. Test yourself
Factorial experimental designs involve one fixed and one random effect
Factorial experimental designs involve two or more fixed effects
False. Two or more fixed effects factors
True
Factorial experiments can be designed as completely randomised, randomised block or even Latin square designs
Each factor in a factorial experiment should have two or more levels
True. Strictly they are arrangements of treatments rather than “designs”
A significant interaction implies that the magnitude of response to one factor depends on the level of another factor
Group size in a factorial design can be as low as two, or even lower with special assumptions
True.
True. We average across several groups
Factorial experiments provide an efficient way of finding out what factors influence an outcome of interest.
True. They often require no more animals but provide more information
