Yiwuwar abu (Lissafi)

Yiwuwa (Probaility) A kimiyyance, yuwuwar aukuwa lamba ce da ke nuna yiwuwar faruwar lamarin. An bayyana shi azaman lamba a cikin kewayon daga 0 da 1, ko, ta yin amfani da bayanin kashi, a cikin kewayon daga 0% zuwa 100%. Mafi kusantar lamarin zai faru, mafi girman yiwuwarsa. Yiwuwar abin da ba zai yiwu ba shine 0; na wani lamari da ya tabbata zai faru shine 1  Hacking, I. (2006) The Emergence of Probability: A Philosophical Study of Early Ideas about Probability, Induction and Statistical Inference, Cambridge University Press, ISBN 978-0-521-68557-3[page needed]. Yiwuwar abubuwan da suka dace biyu A da B - ko dai A yana faruwa ko B ya faru - ƙara har zuwa 1. Ross, Sheldon M. (2010). A First course in Probability (8th ed.). Pearson Prentice Hall. pp. 26–27. ISBN 9780136033134. Misali mai sauƙi shine jefawa. tsabar tsabar gaskiya (mara son zuciya). Idan tsabar kuɗi ta yi gaskiya, sakamakon biyu mai yiwuwa ("kawuna" da "wutsiyoyi") suna da yuwuwa daidai; tunda waɗannan sakamakon guda biyu sun dace kuma yuwuwar “kawuna” daidai yake da yuwuwar “wutsiya”, yuwuwar kowane sakamakon biyun ya kai 1/2 (wanda kuma ana iya rubuta shi azaman 0.5 ko 50%).
 Jeffrey, R.C., Probability and the Art of Judgment, Cambridge University Press. (1992). pp. 54–55 . 

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