SWORDF1SH on 05 December 2015
I'm going to stick with my theory of sales covering the entire week but the further back we go the less weight sales hold. This would make a far more stable chart.
For example and for arguments sake, let's say an item sells 1000 a day for the week .The last 24 hour would account for 1000. Now let's say every day back, the sales half and half again for a further day back. So the sales assigned to that item would be 1000, 500, 250, 125, 62,31 and 15. That equals about 1980. But it one of those days is real high then it could still carry a big number to hold it number one even though it's being outsold at that very moment.
If the chart did only represent the last hour, it would be chaotic
