Binomial Probability

Useful for Mathematics FSMQ and GCSE Statistics

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Binomial Probability
P(x=r) = pr qn-r
n = number of trials
r = number of successful trials
p = probability of successful event occurring
q = probability of successful event not occurring
Example: When rolling a dice 100 times, what is the probability of rolling a number 4
twenty five times?
n = 100 r = 25 p= q=
P(x=4) = 25 75 = 0.009825881 0.0010


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