Question

intr-o saptamana temperaturile sunt : -4 , -1 , 2 , -1 ,1 , -2 , -3
care e media celor 7 zile

Answer 1

-1.1428571429(media ari?metica) 

Answer 2

$\frac{(-4)+(-1)+2+(-1)+1+(-2)+(-3) }{7}= \frac{-4-1+2-1+1-2-3}{7}= \frac{-8}{7}$