mathematically assessment quantification of a person

Question

I want to do assessment of persons by interviewing them for a specific job. Let us say there are 5 skills in which i want to evaluate them, different skills are not equally important. And for each skill I will grade them A, B, C or D, let us say 100%, 75%, 50% and 25%.

At the end I want to get the individual's score in percentage.. like person X scored 80%, Y scored 90% and so on.

I cannot work out what will be its mathematical equation?

Answer 1

One simple way is to do it is like so:

Each sub-score is assigned a percentage (so they are all based on the same denominator). And assign weights to each. The weights can all be set to $1$ if you want all sub-scores to carry equal weight.

So for sub-score $A$ (for task $A$), we assign weight $w_A$, etc.

Let's stick to five tasks as per your requirement.

The total score $S$ as a percentage will then be:

$S = \frac{w_AA +w_BB + w_CC + w_DD + w_EE }{w_A + w_B +w_C + w_D +w_E}$