Computer dealt hands - random?
It has been noted by a number of players at the club that we are seeing very unusual numbers of voids in recent weeks. We use a Dealer4 machine/software and have been using this for a number of years now.
Just this week I played on Tuesday afternoon and we only played 21 boards and I had 3 voids and my wife had 1. So, 4 in 21 boards (perhaps there were more in the opposition hands too?). We had 4 voids between us on Wednesday in 24 played boards. Grabbing a random pair from Thursday (I didnt play) and they had 4 voids between them in 24 played boards too!
A quick calculation of the odds:
4 x (39/52 x 38/51 x 37/50 x 36/49 x 35/48 x 34/47 x 33/46 x 32/45 x 31/44 x 30/43 x 29/42 x 28/41 x 27/40) = 0.05116 or roughly 1 in 20 deals.
So, on average we should be seeing about 1 to 2 per night, whereas in 69 boards over the last 3 days we have seen 12 voids (possibly more?), or more than 1 in 6 deals.
Incase this is just an unusual series of deals (it is only 1 in 20 on average so outliers are expected and normal), I have looked back on previous nights and I am seeing similar numbers, 3 and 4 voids each session for the last few weeks.
Has anyone had any experience of this sort of thing and have any recommendations? I am thinking that perhaps an uninstall/reinstall of software might be in order.