A dragon trainer from pern was researching dragon evolution over the last 2000 turns (years). since the dragons were first bred, their size (as a species) has increased. the researcher, kitty ping, designed them such that they would reach maximum height within 1700 turns after they were first bred. a sample of 5 dragons was taken and here is the data on their lengths: {37.31 ,39.12 ,34.69 ,39.70 ,41.26}. what are the mean, variance, and standard deviation (respectively)?