I am new here and I would like you to help me with this question I have please.

Say that generally speaking in 80% of cases height is strongly correlated with weight, that is the more you are tall the more you weigh.

Now, is there anyway to know in the cases not explained by the height/weight correlation for a given height how much can one possibly weigh and with what probability?

Say one is 1.80 CM tall and this means that he usually weighs 80kg. In the cases one person deviates from the norm, can we know how much he can possibly weigh and with what probability?

Thank you in advance.