# data[].attributes.body
Probability mass function:

# data[].attributes.body
Probability mass function:
P(X=x)=nCx px (1-p)(n-x)

# data[].attributes.body
Probability mass function:
P(X=x)=(1-p)(x-1) p

# data[].attributes.body
Probability mass function:
P(X=x)=(x-1)C(r-1)pr(1-p)x-r