Dr. Upadhaya has carried out two way ANOVA with 'intensity of light' and 'font size' as independent variables and 'visual acuity' as the dependent variable. Which of the following are true ?
A. Interaction effect can be checked
B. It is a factorial design
C. Independent variables have been taken up as continuous variables in this study
D. This is a suitable example to establish causal effect
Choose the most appropriate answer from the options given below:
Pick an option to check yourself, or open the answer below.
Show answer & explanation
Correct answer: D. B, D & A only
Explanation
A two-way ANOVA is a factorial design that tests interaction, and manipulated IVs allow causal conclusions; the IVs are treated as categorical, not continuous.
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