We follow a formula inorder to calculate the ratings in our survey.
Rating = Sum of Ranks awarded to each answer*100/(No. of Questions * No. of Satisfaction levels)
Assume i have 4 Survey Questions Q1, Q2,Q3 and Q4
I have 2 answers to each question A1, A2
If a user has selected A1 for Q1, A1 for Q2, A2 for Q3 and A2 for Q4 then the rating would be
(1+1+2+2)*100/4*2 = 75%
where 1 in the Nr is the rank awarded to 1st answer, 1 in the Nr is the rank awarded to 2nd answer, 2 in the Nr is the rank awarded to 3rd answer and 2 in the Nr is the rank awarded to 4th answer, 4 in the Dr is the number of questions and 2 in the Dr is the number of answers.