Statistiques Exemples
ClasseFréquence360-3692370-3793380-3895390-3997400-4095410-4194420-4294430-4391ClasseFréquence360−3692370−3793380−3895390−3997400−4095410−4194420−4294430−4391
Étape 1
La limite inférieure pour chaque classe est la valeur la plus basse de cette classe. La limite supérieure pour chaque classe est la valeur la plus élevée de cette classe.
ClassFrequency(f)LowerLimitsUpperLimits360-3692360369370-3793370379380-3895380389390-3997390399400-4095400409410-4194410419420-4294420429430-4391430439ClassFrequency(f)LowerLimitsUpperLimits360−3692360369370−3793370379380−3895380389390−3997390399400−4095400409410−4194410419420−4294420429430−4391430439
Étape 2
Le point médian de la classe est la limite de classe inférieure plus la limite de classe supérieure divisée par 22.
ClassFrequency(f)LowerLimitsUpperLimitsMidpoint(M)360-3692360369360+3692370-3793370379370+3792380-3895380389380+3892390-3997390399390+3992400-4095400409400+4092410-4194410419410+4192420-4294420429420+4292430-4391430439430+4392ClassFrequency(f)LowerLimitsUpperLimitsMidpoint(M)360−3692360369360+3692370−3793370379370+3792380−3895380389380+3892390−3997390399390+3992400−4095400409400+4092410−4194410419410+4192420−4294420429420+4292430−4391430439430+4392
Étape 3
Simplifiez toute la colonne du point médian.
ClassFrequency(f)LowerLimitsUpperLimitsMidpoint(M)360-3692360369364.5370-3793370379374.5380-3895380389384.5390-3997390399394.5400-4095400409404.5410-4194410419414.5420-4294420429424.5430-4391430439434.5ClassFrequency(f)LowerLimitsUpperLimitsMidpoint(M)360−3692360369364.5370−3793370379374.5380−3895380389384.5390−3997390399394.5400−4095400409404.5410−4194410419414.5420−4294420429424.5430−4391430439434.5
Étape 4
Ajoutez la colonne des points médians au tableau d’origine.
ClassFrequency(f)Midpoint(M)360-3692364.5370-3793374.5380-3895384.5390-3997394.5400-4095404.5410-4194414.5420-4294424.5430-4391434.5ClassFrequency(f)Midpoint(M)360−3692364.5370−3793374.5380−3895384.5390−3997394.5400−4095404.5410−4194414.5420−4294424.5430−4391434.5
