Hi everyone, I've been wondering if there is any policy governing the use of decimals and rounding off in run-off triangles. The table on page 24 of chapter 21 is confusing. Some figures are rounded off to the nearest whole number, while the others are simply truncated, even when they are very close to the nearest whole figure. I've attached the same here for your review.
Had any luck with this? As far as I can tell, claim payments are in whole numbers. Anything with decimals seem to work to 4s.f.'s (so inflation indexes 126.5, but development factors 1.051). I met this in CT6 before, and the approach there seemed to be that 4 sig-figs is OK, because you had to write it all down because there's too much to store in the calculator. I don't know whether this sort of thing can turn up in Paper B, where presumably any rounding at all mid-question would be bad (...? Do not take my word on that, I haven't been to a prep day yet).
