BETA.DIST(x, alpha, beta, cumulative, [,A] [,B]) |
Returns the probability of getting less than or equal to a particular value in a beta distribution. |
| x | The number between A and B from the distribution. |
| alpha | The first parameter to the distribution. |
| beta | The second parameter to the distribution. |
| cumulative | The type of function to use: True = cumulative probability function (less than) False = probability density function (equal to) |
| A | (Optional) The lower bound to the interval of x. |
| B | (Optional) The upper bound to the interval of x. |
Remarks |
| * Added in Excel 2010. * This function replaces the BETADIST function and to make it more consistent with the NORMDIST function. * The beta distribution is a continuous distribution. * If "cumulative" = True, then the area under the curve to the left of "x" is returned. This uses the cumulative probability function. * If "cumulative" = False, then the height of the bell shaped curve at "x" is returned. This uses the probability density function. * All the values are greater than zero * If the parameters are equal, the distribution is symmetrical. * If either parameter is 1 and the other parameter is greater than 1, the distribution is J-shaped. * If alpha is less than beta, the distribution is said to be positively skewed (most of the values are near the minimum value). * If alpha is greater than beta, the distribution is negatively skewed (most of the values are near the maximum value). * For the Microsoft documentation refer to support.office.com |
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