Question

in clasa a 5-a sunt 25 elevi. calculati media clasei la evaluareade linba reomana stiind ca notele inregistrate sunt cele din tabelul urmator. tabel: nota:4 ,4, 6 ,7, 8 ,9, 10 numar de elevi:1,1, 2 ,5, 6, 4 ,6

Answer 1

(4×1+4×1+6×2+7×5+8×6+9×4+10×6)÷25=
=(4+4+12+35+48+36+60)÷25
=(8+47+84+60)÷25
=(55+144)÷25
=199÷25
=7,96