In part one I asked which size should be the size used for costing if sizes ranged from 28-48 with inseams varying from 28-36.
Here’s how I set it up, waist sizes on the horizontal across the top and inseams on the vertical axis to locate the mid point of the range. The blue box shows what should be the costing size, a 38 waist with 32 inch inseam. The size this firm had been using is illustrated in red, a 34/32.
I know this isn’t the final best possible answer but it’s at least 4″ better than their last one.
Sarah gave the answer I was looking for which is not to say other suggestions weren’t also good or pragmatic. Alison said it should be based on marker allocation (and it should) but this can vary according to size distribution of a given order and it requires that purchasing and sales have yield information at their disposal and they often don’t. This is how a lot of companies are run these days. Alison then suggested the costing size be based on the median size of the order but again, this solution requires they have the allocation figures for a given order.
Barb had an interesting suggestion, to cost on the median size for the majority of orders placed with an up charge on the larger sizes.
Lastly, Esther said CAD systems do a costing marker (true) which provides the best figure for cost analysis but again, this solution would require tighter communication of critical data between sales and the pattern department.