# array average across column

Roy Patel
array average across column
0 Answer(s)      3 years and 5 months ago
Posted in : Java Beginners

How can I find the overall averages of the columns in this array? when i run my code it gives me an output that looks like this (showing me wrong averages):

How can I find the overall averages of the columns in this array? when i run my code it gives me an output that looks like this (showing me wrong averages):

0 1 2 3 overall grade Badger,Bradley 37 70 51 48 68.66666666666667 Emu,Emma 35 81 75 40 72.83333333333334 Aardvark,Alice 42 85 22 0 65.11111111111111 Dodo,Donald exc 12 25 0 54.17391304347826 Cassowary,Cassie 50 97 72 68 62.758620689655174

this is my code but i don't know what the mistake is

public static double[] computeAllGrades(int[][] scoreTable, int[] itemPointValues) {

```            {
double totalPoints = 0;
double totalPointsPossible = 0;

int k = 0;

for(int j = 0 ; j < scoreTable.length ; j++)
{
for(int i = 0 ; i < scoreTable[0].length ; i++)
{
if(scoreTable[j][i] == -1)
{
totalPoints = totalPoints + 0;
totalPointsPossible = totalPointsPossible + 0;

}
else
{
totalPoints = totalPoints + scoreTable[j][i];
totalPointsPossible = totalPointsPossible + itemPointValues[i];
}

}

k++;
}

```

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