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Formula generator for EXPONDIST FUNCTION function

The EXPONDIST function calculates the probability of an event occurring within a certain time period, given the average rate of occurrence. It is commonly used in statistics and probability analysis.

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How to generate an EXPONDIST FUNCTION formula using AI.

To obtain information on the ARRAY_CONSTRAIN formula, you could ask the AI chatbot the following question: “To get the EXPONDIST formula, you can ask the AI chatbot the following question: "What is the Excel formula for calculating the exponential distribution probability (EXPONDIST)?"


The EXPONDIST function in Excel is used to calculate the exponential distribution, which is a continuous probability distribution that describes the time between events in a Poisson process. The syntax for the EXPONDIST function is as follows: EXPONDIST(x, lambda, cumulative) - x: This is the value at which you want to evaluate the exponential distribution. - lambda: This is the parameter that represents the average number of events per unit of time. It must be greater than 0. - cumulative: This is a logical value that determines whether to calculate the cumulative distribution function (TRUE) or the probability density function (FALSE). The EXPONDIST function returns the probability of the exponential distribution at a given value (x) or the cumulative probability up to that value, depending on the value of the cumulative argument.

Use Cases & Examples

In these use cases, we use the EXPONDIST function to calculate the probability of an event occurring within a specific time frame, based on the exponential distribution.

Calculate Exponential Distribution


In this use case, we use the EXPONDIST function to calculate the probability of an event occurring within a certain time period, given the average rate of occurrence.


EXPONDIST(x, LAMBDA, cumulative)

Analyze Failure Rates


In this use case, we use the EXPONDIST function along with other functions like COUNTIF and AVERAGE to analyze failure rates of a system or process.


EXPONDIST(x, LAMBDA, cumulative)

Forecast Arrival Times


In this use case, we use the EXPONDIST function in combination with other functions like MAX and MIN to forecast arrival times of vehicles or shipments based on historical data.


EXPONDIST(x, LAMBDA, cumulative)

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Frequently Asked Questions

  • The EXPONDIST function is used to calculate the exponential distribution for a given set of parameters.
  • The EXPONDIST function requires three arguments: x (the value at which to evaluate the distribution), lambda (the parameter of the distribution), and cumulative (a logical value that determines the form of the function).
  • To use the EXPONDIST function, you can enter the formula =EXPONDIST(x, lambda, cumulative) in a cell, replacing x, lambda, and cumulative with the appropriate values.
  • The cumulative argument in the EXPONDIST function determines the form of the function. If cumulative is TRUE or omitted, EXPONDIST returns the cumulative distribution function. If cumulative is FALSE, EXPONDIST returns the probability density function.
  • No, the EXPONDIST function is specifically used for continuous distributions. For discrete distributions, you should use other appropriate functions.