Weighted Grade Average Calculator

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what my weighted average grade if i have grades in three subject respectively 67,54,98 with weight of respectively 32,12,45. i know the formula =(67*32)+(54*12)+(98*45)/(32+12+45) but i dont know how its work if i use for loop.

Posted 25-Feb-13 17:57pm

andy007 2

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Rajesh Anuhya 26-Feb-13 0:02am

Question Not Clear??
--RA

Sergey Alexandrovich Kryukov 26-Feb-13 0:10am

This is not a formula, this is a numeric example. If you have not idea of elementary algebra (you don't need to know any formulas, but understanding), you have nothing to do in programming.
—SA

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Motamas · Answer 1 · 2013-02-26T00:05:00

Solution A,

you can use two arrays. One for the numbers one for the corresponding weights.

C#

public double[] _number = new double[] {67,54,98};
public double[] _weights = new double[] {32,12,45};

then: 

double _wavg = 0;

for(int i = 0; i < _number.Count(); i++)
{
   _wavg += ((_number[i] * _weight[i]) / (_weights.Sum())

}

Solution B,

You can use a predefined class to store your numbers end weights

C#

public class WeightedNumber
{
   public double Number {get; set; }
   public double Weight{get; set; }

}

List<wightednumber> _numbers;</wightednumber>

The rest looks more or less the same

Sammy007 2024 · Answer 2 · 2024-01-17T02:18:00

you can use the scores i.e. {67, 54, 98} to put a for loop something like below

C#

var _average = 0;
for(int i = 0; i < scores.Count(); i++)
{
   _average += ((scores[i] * weights[i]))

}
_average = (_average/ (weights.Sum()) * 100;

Read out below articles to know how the formula actually works and different ways of calculating the same:
article, specified formula

Weighted Grade Average Calculator

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