Media aritmetica a numerelor se calculeaza ca suma lor impartita la cate numere sunt.
formula generala:M_a(a;b)=(a+b):2
Rezolvare: [tex]12,4~si~36,8\\
M_a_(_1_2_,_4_;_3_6_;_8_)= \frac{12,4+36,8}{2} =\ \textgreater \ M_a_(_1_2_,_4_;_3_6_;_8_)= \frac{49,2}{2} \\
=\ \textgreater \ M_a_(_1_2_,_4_;_3_6_;_8_)=24,6(rotunjim~si~reiese~ca~M_a=25)[/tex]