How do we create weighted average for a matrix?

Hello,

I have a matrix e.g

[ 5 3 3 1
  3 4 5 2
  5 0 0 0
  3 4 5 2]

For this matrix I have to make a weighted average for each row. That is, [5+3+(4/5)*(3+1)] / 4=16/5. Also if there is only one number and the rest zero (row 3), the weighted average should be (5+0+0+0) / 1=5 and in the end we choose the largest weighted average.

I would appreciate it very much if someone helped me!!!

[KALYAN ACHARJYA]

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