On étudie la fréquence d’un événement grâce au graphique ci-dessous représentant \( 100 \) échantillons.
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[[[86.3, 0.6772], [87.7, 0.6772]], {"stroke": "red"}], [[[88, 0.69468], [88, 0.6973199999999999]], {"stroke": "red"}], [[[87.3, 0.696], [88.7, 0.696]], {"stroke": "red"}], [[[89, 0.67848], [89, 0.68112]], {"stroke": "red"}], [[[88.3, 0.6798], [89.7, 0.6798]], {"stroke": "red"}], [[[90, 0.66698], [90, 0.66962]], {"stroke": "red"}], [[[89.3, 0.6683], [90.7, 0.6683]], {"stroke": "red"}], [[[91, 0.66908], [91, 0.67172]], {"stroke": "red"}], [[[90.3, 0.6704], [91.7, 0.6704]], {"stroke": "red"}], [[[92, 0.65858], [92, 0.66122]], {"stroke": "red"}], [[[91.3, 0.6599], [92.7, 0.6599]], {"stroke": "red"}], [[[93, 0.6564800000000001], [93, 0.65912]], {"stroke": "red"}], [[[92.3, 0.6578], [93.7, 0.6578]], {"stroke": "red"}], [[[94, 0.66428], [94, 0.66692]], {"stroke": "red"}], [[[93.3, 0.6656], [94.7, 0.6656]], {"stroke": "red"}], [[[95, 0.66818], [95, 0.67082]], {"stroke": "red"}], [[[94.3, 0.6695], [95.7, 0.6695]], {"stroke": "red"}], [[[96, 0.67278], [96, 0.67542]], {"stroke": "red"}], [[[95.3, 0.6741], [96.7, 0.6741]], {"stroke": "red"}], [[[97, 0.68288], [97, 0.68552]], {"stroke": "red"}], [[[96.3, 0.6842], [97.7, 0.6842]], {"stroke": "red"}], [[[98, 0.66968], [98, 0.67232]], {"stroke": "red"}], [[[97.3, 0.671], [98.7, 0.671]], {"stroke": "red"}], [[[99, 0.66928], [99, 0.67192]], {"stroke": "red"}], [[[98.3, 0.6706], [99.7, 0.6706]], {"stroke": "red"}], [[[100, 0.70158], [100, 0.70422]], {"stroke": "red"}], [[[99.3, 0.7029], [100.7, 0.7029]], {"stroke": "red"}]]}
Déduire de ce graphique une valeur approchée de la taille \( N \) des échantillons puis choisir
la valeur exacte la plus proche parmis les choix suivant.