The variation of the end is calculated with standard deviation. Standard deviation is a measure that expresses the degree of dispersion of a data set. That is, the standard deviation indicates how uniform a dataset is. The closer to 0 the standard deviation, the more homogeneous the data. Credits to @honey yjy Distribution Percentage Flawless - 0% to 10% Perfect - 11% to 20% Great - 21% to 30% Good - 31% to 40% Average - 41% to 50% Okay - 51% to 60% Uneven - 61% to 70% Bad - 71% to 80% Terrible - >81%

heejay owned this one

2:11 IS Jake