Numeric Weighting

Numeric Weighting involves developing numeric scales in order to rate performance against each evaluation criterion and then adding them up for a total score.

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Updated: 21st August 2014 - 11:17am


Wouter Rijneveld's picture
Wouter Rijneveld

Very often, using such numbers, e.g. on a 1 to 4 scale suggest a precision that the judgement actually does not have. When calculating total scores (averages) this suggestion of precision can be even stronger.

One way around this, is to convert the numbers back to colour codes, e.g. ranging from red to green. Microsoft Excel has very simple but powerful options for conditional formatting with colour gradients. In this way the differences between 2.6 and 2.8 are indeed shown as "a little more greenish" and the suggestion of accuracy is replaced by a visually attractive way of communicating the same message.

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