A double digit bias is a lotto trend to look for in the Odd/Even Bias Tracker Chart in Advantage Gold. A double digit bias is when there are 2 lotto numbers of equal probability, but one is odd and the other is even and the past ten games produced an E=+10, or a different double digit difference, you would choose the odd number because the bias would favor the off number being drawn.


Screenshot of Advantage Gold, Odd Even Bias Tracker
Double digit bias example is highlighted.