This is straight from the "How to read ACC statistics" page on their website
Categories with fewer than three claims
For privacy reasons, if the number of claims reported is between 1 and 3 actual claims, this is displayed as ‘≤3’ claims. (Are our payments also calculated this way... the figures could be out by as much as a factor of 3)
Presenting cost of claims
Costs are rounded to the nearest $1,000, and percentages to the nearest 0.1%. Costs less than $500 are reported as ‘<$500’. (WTF)
so the final total could be really quite wrong if these statistical analysis parameters are used. I am no expert, but have written shitloads of reports before and these parameters could cause be used very badly.
i'd say in this instance you've got carte blanche to come up with any figures you deem fit!
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