Download Binomial Distribution Summary

Binomial Distribution: Summary Notes
Conditions for the binomial distribution:
 Fixed number of trials, n
 Only two possible outcomes, success or failure
 Probability of success does not change, p
Notation for binomial distribution:
X
B  n, p 
Ways of calculating binomial probabilities:
 Binomial cumulative tables give P  X  r 
 Binomial formula gives P  X  r  . Formula is
P  X  r   n Cr p r 1  p 
nr
Mean and variance of a binomial distribution:
  np
 2  np 1  p 
So, of course the standard deviation is given by   np 1  p 