
This metric counts “Unknown” values for a range of social/labour metrics (see formula above) and subtracts these from 15 (the total number of metrics considered) to give a count of the number of reported answers.
This metric will only be calculated for companies that have some form of answer for all 15 metrics (i.e. an answer or Unknown) - if even one of the metrics has not been assessed for the company it will be excluded from this analysis.
numKnown [m1, m2, m3, m4, m5, m6, m7, m8, m9, m10, m11, m12, m13, m14, m15]