In 35 numbers, Lucilyn used the number 7 once, including when she was trying not to be random. I guess we know how to break your
Our mental algorithm for random is the same as peoples' typical default, ie choose ""random"" varied numbers, but we add in a counter-measure for that bias by randomly repeating numbers when we normally wouldn't have. That was the biggest factor of non-randomness, our habit of covering the board before repeating, so not doing that is probably why she scored high on the randomness scale.
Also, I get the feeling using a keyboard and saying the numbers aloud might have slightly different results. For some people at least. For us, we think the numbers before we hit them, because we've pretty much learned to think through our keyboard. But I can see others relying more on muscle randomness than randomly generated numbers randomness.