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ccb purpan 2019 last time


Go to solution Solved by yeehaw,

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Posted (edited)

salut @Awwa

si si la formule est dans le cours ahah c'est vrai qu'elle passe un peu inaperçue 🙂 

je te mets le lien de la diapo : https://www.casimages.com/i/200106083045861113.png.html

 

Edited by ms987
Posted

Salut ! 

Il faut faire attention, car ici, tu as un estimateur. Pour sa variance (et son écart type du coup), son dénominateur n'est pas égal à n, mais à n-1 😉

Bonne chance pour demain !

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