Name for resistance to change in data Suppose I have two poll questions that can be answered with a Yes or a No with the following results: Poll 1 * Yes: $200$ * No: $100$ Poll 2 * Yes: $2$ * No: $1$ Both polls have a $66\%$-$33\%$ split, but getting them to a $50\%$-$50\%$ split is much harder with the first poll than with the second poll. There would have to be $100$ new "No"s for the first as opposed to $1$ new "No" for the second one, two orders of magnitude in difference. Is there a mathematical/statistical name for this "resistance to change"?

Sometimes a result is said to be "robust" if it holds despite small changes in input.