Hi dee man,
deleting a draw or 2 from the history-list?
Why not delete all the draws from which you think they have "strange numbers"?
All the draws together are going to "colour" all your future attempts, might as well delete them all.
Just kidding, sorry...
I have not used it in quite a while now, but deleting a draw (or two) has never crossed my mind b/c then it would be me that was "colouring" further attempts...
Well, 2 draws ago, here in Belgium where a 6/42 is, the numbers have been: 2 - 5 - 7 - 14 - 16 - 20
Only happened 15 times, on 2084 draws or so.
Thing is, they happen...
Could be that if you decide to delete them two draws, that you suddenly have a good prediction result.
Could be that if you decide to delete them two draws, that you suddenly have a bad prediction result, b/c the following draw is another "not stable range".
Most draws will have numbers that have 3 nbrs lower than 20 and 3 nbrs higher than 20. Might fluctuate a little (ball 3 & 4 fishing around the 20-value)
Thats just the statistics...
If you are basing you predictions on historical data then all the data is important. I doubt you expect your predictions to be correct 100% of the time so you need to know how correct they must be to cover your expenses in a reasonable amount of time.
When playing a multi-state game with jackpots of $20M+, being correct less than 1% of the time is good enough if you can be confident that a 100% correct prediction is in the works in a reasonable amount of time. However if you playing a pick3 or pick4 game with smaller prize amounts, a higher percent of accuracies have to be expected.
I prefer to use all the historical data and concentrate in the range where most of the winning numbers occur.
If you could reasonable predict the winning combinations with only 2 or 3 draw history, everybody would be winning and the odds of winning would be 1:3 instead 1:1000, 10,000, 14,000,000 and more.
those spikes are the nature of the beast, any attempt to "smooth" the data will result in a guaranteed error "ripple effect" later on.
unless they change the rules, like PB did when they added #'s 54 and 55
in that situation I scrapped all previous white ball draws... PB data is still valid tho, so now all my "research" is in that area.