Question

In clasa a 5 sunt 25 de elevi.Calculati media clasei la evaluarea de la limba romana , stiind ca netele inregistrate sunt nota 4 un elev nota 5 un elev nota 6 doi elevi nota 7 cinci elevi nota 8 sase elevi nota 9 patru elevi si nota 10 sase elevi

Answer 1

Se calculeaza media aritmetica ponderata
M=(1*4+1*5+2*6+5*7+6*8+4*9+6*10)/25=
(4+5+12+35+48+36+60)/25=8

Answer 2

Ma = ( 4 x 1 + 5 x 1 + 6 x 2 + 7 x 5 + 8 x 6 + 9 x 4 + 10 x 6 ) : 25 =
= ( 4 + 5 + 12 + 35 + 48 + 36 + 60 ) : 25 =
= 200 : 25 =
= 8