NEGBINOM.DIST: Google Sheets Formulas Explained

Have you ever felt like you're drowning in the endless sea of spreadsheets? Well, you're not alone my friend! As a marketer, I know how overwhelming data can be, and that's why I'm here to tell you about one formula that can help: NEGBINOM.DIST. Don't let the long name scare you off, this formula can be your secret weapon.


NEGBINOM.DIST is a statistical function that calculates the probability of a specified number of failures before a specified number of successes in binomial distribution. In simpler terms, it can help you determine the probability of getting a certain number of failures before achieving a specific number of successes in a given situation.

For instance, if you're running a marketing campaign hoping to get 5 sales from your target audience, NEGBINOM.DIST can help you identify the probability of achieving those sales based on previous attempts, while taking into account the potential number of failed attempts.

How to Use NEGBINOM.DIST in Google Sheets

If you're already familiar with the statistical language of excel, using NEGBINOM.DIST will be a breeze. For those new to this concept, there are a few key things to know before diving in. Let's take a look at an example:

=NEGBINOM.DIST(Number_f, Number_s, Probability_s, Cumulative)

The function takes four arguments:

  • Number_f: The number of failures you want to predict before achieving the desired number of successes.
  • Number_s: The desired number of successes.
  • Probability_s: The probability of success in each attempt.
  • Cumulative: Logical value that determines the type of probability distribution to use.

Let's take the example mentioned earlier and apply the NEGBINOM.DIST formula. If the probability of success is 10% and you're trying to get 5 sales, you would use the following formula:

=NEGBINOM.DIST(0, 5, 0.1, false)

Breaking down the formula:

  • Number_f: 0. You're not considering any failed attempts since you're simply targeting a specific number of successes.
  • Number_s: 5. The desired number of successful attempts you're aiming for.
  • Probability_s: 0.1. The probability of success in each attempt.
  • Cumulative: False. We're not including failed attempts.

The result of this formula will give you the probability of achieving five sales without any failed attempts. You can further manipulate the formula to account for potentially unsuccessful attempts.

Why Use NEGBINOM.DIST in Marketing?

As marketers, we're always looking for ways to measure the effectiveness of our campaigns and predict future performance. NEGBINOM.DIST is an excellent tool that can help do just that. By using this formula, you can analyze historical data to predict future performance and adjust your campaigns accordingly.

But why stop there? NEGBINOM.DIST can be used in a variety of situations including market research, pricing, and sales forecasting. The possibilities are endless and the insights gained can help you make informed decisions to grow your business.


Excel formulas may seem dry and intimidating, but they're invaluable when it comes to analyzing data and predicting future performance. NEGBINOM.DIST is just one of many tools available to marketers, but mastering this formula can set you apart from the competition. Don't be afraid to dive in and apply this formula to your next campaign, the results may surprise you. Happy analyzing!

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