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π Promath
Editions MATHÉMATIQUES & STATISTIQUES DE GESTION
25 [Quartiles]
Classes fi Fi
[ 2 ; 4 [ 0,25 0,25
[ 4 ; 6 [ 0,75 1
Total 1
• Q1 = 4
• Q2 = 4 +
0, 5 − 0, 25
0, 75
× 2 = 4, 6
• Q3 = 4 +
0, 75 − 0, 25
0, 75
× 2 = 5, 3
