I want to use a rate system in my app , well I know how to implement RatingBar but I need to know the way I can calculate rating after each rate
For example user 1 give 5 starts but 2 other users gives 3 , 4 starts, so what is the result in this case and how to calculate it ? there is a formula of calculation for this issue ?
yes, you have to show the average rating
the formula is (sum of all ratings)/(count of total rating)
example 4 user give rating 1,2,3,5 respectively.
then your formula be like
(1+2+3+5)/4
answer will be 2.75