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The NEGBINOM.DIST function is one of the statistical functions. It is used to return the negative binomial distribution, the probability that there will be Number_f failures before the Number_s-th success, with Probability_s probability of a success.

The NEGBINOM.DIST function syntax is:

NEGBINOM.DIST(number-f, number-s, probability-s, cumulative)


number-f is the number of failures, a numeric value greater than or equal to 0.

number-s is the the threshold number of successes, a numeric value greater than or equal to 1.

probability-s is the success propability of each trial, a numeric value greater than 0, but less than 1.

cumulative is a logical value (TRUE or FALSE) that determines the function form. If it is TRUE, the function returns the cumulative distribution function. If it is FALSE, the function returns the probability density function.

The numeric values can be entered manually or included into the cells you make reference to.

To apply the NEGBINOM.DIST function,

  1. select the cell where you wish to display the result,
  2. click the Insert function Insert function icon icon situated at the top toolbar,
    or right-click within a selected cell and select the Insert Function option from the menu,
    or click the Function icon icon situated at the formula bar,
  3. select the Statistical function group from the list,
  4. click the NEGBINOM.DIST function,
  5. enter the required arguments separating them by commas,
  6. press the Enter button.

The result will be displayed in the selected cell.


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