Binomial Test Calculator

This binomial test calculator determines the probability of a particular outcome (K) across a certain number of trials (n), where there are precisely two possible outcomes.

To use the calculator, enter the values of n, K and p into the table below (q will be calculated automatically), where n is the number of trials or observations, K is number of occasions the actual (or stipulated) outcome occurred, and p is the probability the outcome will occur on any particular occasion.

Things to remember: (a) the binomial test is appropriate only when you've got just two possible outcomes (or categories, etc.); (b) n and K will be frequencies; and (c) the value for p will fall somewhere between 0 and 1 - it's a proportion.

n K p q
not calculated

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