@Markiyan Hirnyk I have forgotten to add a part of task b.

I am also supposed to find an estimate for Sigma.

And i wonder which outputs represents the minimum least square estimate for α & β? (task b)

@Markiyan Hirnyk it is amazing how helpfull people can be, and you are a great example!
You have my deepest appretiation, and I'll be sure to ask on Mapleprimes again if I get stuck.

Have a nice day, regards
Soeta

Thank you so much for a great response, but I can clearly see that this solution is way out of my skilleague when it comes to maple.. Is it possible to get a short explanation of which calculations represents what, and why there are so many different answers going on?

I would really like to understand this!

Thank you again for your help, this is really appretiated,

Soeta

@Markiyan Hirnyk