An instructor wants to find out whether modality of instruction affects students

Step 1
ANOVA: This is the statistical technique to check the Variability in the data.
for comparison of more than two populations, we are using the ANOVA technique.
The measurement is taken on each experimental unit pertaining to the character of interest and its variance is calculated. this total variance is due to various factors involved in the experiment. the purpose of the analysis of variance is to split the total variance into component variance and to test the hypothesis about these component factors. The main interest lies in estimating and comparing pairwise treatment or testing or treatment contrast among treatments.
Step 2
An instructor wants to find out whether modality of instruction affects students