BETADIST

The BETADIST function calculates the beta cumulative distribution function (CDF) at a specified value between 0 and 1. It is used in statistical analysis and risk assessment to model uncertainty or variability of data within a range.

Syntax 🔗

=BETADIST(X, Alpha, Beta, [A], [B])

X The value at which to evaluate the beta cumulative distribution function.
Alpha A parameter of the distribution.
Beta A parameter of the distribution.
A (Optional) The lower bound of the beta distribution. Defaults to 0 if omitted.
B (Optional) The upper bound of the beta distribution. Defaults to 1 if omitted.
B (Optional) The upper bound of the beta distribution. Defaults to 1 if omitted.
B (Optional) The upper bound of the beta distribution. Defaults to 1 if omitted.
B (Optional) The upper bound of the beta distribution. Defaults to 1 if omitted.
B (Optional) The upper bound of the beta distribution. Defaults to 1 if omitted.
B (Optional) The upper bound of the beta distribution. Defaults to 1 if omitted.
B (Optional) The upper bound of the beta distribution. Defaults to 1 if omitted.
B (Optional) The upper bound of the beta distribution. Defaults to 1 if omitted.
B (Optional) The upper bound of the beta distribution. Defaults to 1 if omitted.
B (Optional) The upper bound of the beta distribution. Defaults to 1 if omitted.

About BETADIST 🔗

Use the BETADIST function in Excel to calculate the cumulative distribution function (CDF) of a beta distribution. This function helps you determine the probability of observing a value less than or equal to a specified value within the range of 0 to 1. It's useful for analyzing the distribution and variability of your data, aiding in statistical analysis and risk assessment. BETADIST provides a way to evaluate probabilities within a given range, supporting informed decision-making based on statistical insights.

Examples 🔗

Suppose you want to determine the cumulative distribution function value for X=0.6 in a beta distribution with Alpha=2 and Beta=2. The lower bound (A) is 0, and the upper bound (B) is 1. You can use the formula: =BETADIST(0.6, 2, 2, 0, 1) This will return the cumulative distribution function value for the given parameters.

Consider a scenario where you need to assess the probability of observing a value less than or equal to 0.4 in a beta distribution with parameters Alpha=3 and Beta=5. Assuming the distribution's range is 0 to 1, you can use the formula: =BETADIST(0.4, 3, 5, 0, 1) This will provide the probability assessment based on the specified parameters.

Notes 🔗

The BETADIST function requires that the Alpha and Beta parameters are positive. Additionally, if you provide values for A and B, they should be within the range of 0 to 1. Make sure that your function arguments match the context of your statistical analysis or risk assessment.

Questions 🔗

What does the BETADIST function compute?

The BETADIST function computes the cumulative distribution function (CDF) of a beta distribution. It provides the probability of observing a value less than or equal to a given value within a specified range from 0 to 1.

How can the BETADIST function be used in statistical analysis?

The BETADIST function is valuable in statistical analysis for assessing the variability and uncertainty present in datasets. By obtaining the cumulative distribution function value for specific parameters, it offers insights into the distribution of data points within a specified range, enabling informed decision-making and risk evaluation.

What are the default values for the lower and upper bounds of the beta distribution in the BETADIST function?

The default values for the lower and upper bounds of the beta distribution in the BETADIST function are 0 and 1, respectively, if not explicitly specified.

BETAINV
BINOM.DIST
CHISQ.DIST
GAMMA.DIST

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