d'accord
Fq1 = 2/40= 0,05 = 5%
Fq2 = 1/40 = 0,025 = 2,5%
Fq3 = 3/40 = 0,075 = 7,5%
Fq4 = 1/40 = 0,025 = 2,5%
Fq5 = 7/40 = 0,175 = 17,5%
Fq6 = 1/40 = 0,025 = 2,5%
Fq7 = 5/40 = 0,125 = 12,5%
Fq8 = 5/40 = 0,125 = 12,5%
Fq9 = 2/40 = 0,05 = 5%
Fq10 = 2/40 = 0,05 = 5%
Fq11 = 3/40 = 0,075 = 7,5%
Fq12 = 1/40 = 0,025 = 2,5%
Fq13 = 2/40 = 0,05 = 5%
Fq14 = 1/40 = 0,025 = 2,5%
Fq15 = 1/40 = 0,025 = 2,5%
Fq16 = 1/40 = 0,025 = 2,5%
Fq17 = 1/40 = 0,025 = 2,5%
Fq18 = 1/40 = 0,025 = 2,5%
la moyenne
[( 146x2)+149+(152x3)+153+(155x7)+158+(159x5)+(160x5)+(161x2)+(163x2)+(164x3)+165+(168x2)+170+172+176+180+182]/40 = 187,35