Exact Binomial Test

The exact binomial test is used with binomial data to assess whether the data are likely to have come from a distribution with a specified proportion parameter p. Binomial data are data representing a certain number k of successes out of n trials, where observations occur independently with probability p of a success (such as with coin toss data).

To perform an exact binomial test

Choose Statistics __image\ebd_ebd38.gif Compare Samples __image\ebd_ebd39.gif Counts and Proportions __image\ebd_ebd40.gif Binomial Test. The dialog shown below appears.

__image\exactbin.gif

The Exact Binomial Test dialog has the following options:

Data

No. of Successes

Enter the number of observed successes.

No. of Trials

Enter the number of trials.

Test Hypotheses

Hypothesized Proportion

Enter the probability of success to be tested; the default is 0.5.

Alternative Hypothesis

Specify the alternative hypothesis.

Save As

Enter the name for the object in which to save the results of the analysis.

Print Results

Select this to print out the results of the analysis in the designated output window.

Related S-PLUS language functions

binom.test, print.htest, menuBinom