PA $15-1($Static$)$ Two servers in a restaurant predict how many guests...

Two servers in a restaurant predict how many guests will come for dinner in the next four days. Each server's predictions, along with the actual number of guests for each day, are shown in the table below.

a$.$ Complete the table below. What are the MSE and the MAE for the two servers? Indicate negative numbers by a minus sign.

Answer is not complete.

b$.$ Who has the bigger forecast bias?

Server $1$

Server $2$