How to use BINOMDIST function in Excel

Summary: This tutorial elaborates on how to use the BINOMDIST() function in Excel, a function used to calculate the probability of a fixed number of successes in a fixed number of Bernoulli trials (experiments), each with the same probability of success.

Step 1: Understand the BINOMDIST function The syntax for the BINOMDIST() function is:

=BINOMDIST(number_s, trials, probability_s, cumulative)

Here's what each parameter represents:

  • number_s: The number of successes in trials.
  • trials: The number of independent trials.
  • probability_s: The probability of success on each trial.
  • cumulative: A logical value that determines the form of the function. If TRUE, it returns the cumulative distribution function; if FALSE, it returns the probability mass function.

Step 2: Use the BINOMDIST function Let's say you want to calculate the probability of getting exactly 5 heads in 10 coin flips (where the probability of getting a head on any given flip is 0.5). You can use the BINOMDIST() function as follows:

=BINOMDIST(5, 10, 0.5, FALSE)

This function will return the probability of getting exactly 5 heads in 10 flips.

For deeper insights about the BINOMDIST() function, these resources might be of help:

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