# Difference between revisions of "Documentation/How Tos/Calc: B function"

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=== Syntax: === | === Syntax: === | ||

− | <tt>'''B(n; p; | + | <tt>'''B(n; p; k; k2)'''</tt> |

− | : With <tt>'''n'''</tt> independent trials, each with a probability <tt>'''p'''</tt> of success, <tt>'''B'''</tt> returns the probability that the number of successes will be between <tt>''' | + | : With <tt>'''n'''</tt> independent trials, each with a probability <tt>'''p'''</tt> of success, <tt>'''B'''</tt> returns the probability that the number of successes will be between <tt>'''k'''</tt> and <tt>'''k2'''</tt> inclusive, or if <tt>'''k2'''</tt> is omitted the probability that the number of successes will be exactly <tt>'''k'''</tt>. |

=== Example: === | === Example: === |

## Revision as of 19:02, 25 April 2008

## B

Returns a probability in a binomial distribution.

### Syntax:

**B(n; p; k; k2)**

- With
independent trials, each with a probability**n**of success,**p**returns the probability that the number of successes will be between**B**and**k**inclusive, or if**k2**is omitted the probability that the number of successes will be exactly**k2**.**k**

### Example:

**B(10; 1/6; 2) **

- returns approximately 0.29 (29%), the probability that the number four will be thrown exactly twice in 10 throws of a die.