Calculating the Star Rating is very Simple. We just need to know the number of people who have rated and what rating they have given.
Please refer the image below :
10 People have rated and we can see what rating they have given.
Now, add all the Star ratings given by them and divide the amount by the number of People.
In this example, 10 People have rated and the total star rating given by these 10 People are 38.
So the rating is : 38/10 = 3.8
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