In the most recent Statistics Canada census, one point caught my attention.
It explained that according to the usual analysis methods, approximately 80.6% of francophones used French as the main language at home. However, a new way of analyzing the results showed that 87% of francophones spoke French at home. In the latter, multiple responses were used. In the previous method, if someone said they used both French and English at home, 50% was entered for French and 50% for English. That's the general principle that had been used.
The new method was to enter 100% for people who said they spoke French only, among francophones, and enter 100% for those who also spoke English. This led to totals that sometimes exceeded 100%, like 121%.
Why was this method used? The chief statistician seemed to be saying that it was to help official language minorities.