That's not what cherry-picked means. Cherry-picked means more what you are referring to when you say "hand-picked" here. It means to carefully choose the best.
That's also not what arbitrary means. If you select numbers that are just outside the range of a particular set of data, that's anything but arbitrary. Arbitrary means to choose based on someones discretion or judgment rather than to determine by rule. Comes from the same root as arbitration.
I'm not saying all of that to criticize your use of words, I'm saying it because I honestly don't know what you're trying to say. I think you're probably changing the goalposts.
http://dictionary.reference.com/browse/cherry-picked
That's also not what arbitrary means. If you select numbers that are just outside the range of a particular set of data, that's anything but arbitrary. Arbitrary means to choose based on someones discretion or judgment rather than to determine by rule. Comes from the same root as arbitration.
http://dictionary.reference.com/browse/arbitrary
I'm not saying all of that to criticize your use of words, I'm saying it because I honestly don't know what you're trying to say. I think you're probably changing the goalposts.