x,alpha,beta,cumulative!This function is available for compatibility with (!idspnExcel_2007) and earlier.Returns the gamma ...

!x,alpha,beta,cumulative!!This function is available for compatibility with (!idspnExcel_2007) and earlier.Returns the gamma distribution!is the value at which you want to evaluate the distribution, a nonnegative number!is a parameter to the distribution, a positive number!is a parameter to the distribution, a positive number. If beta = 1, GAMMADIST returns the standard gamma distribution!is a logical value: return the cumulative distribution function = TRUE; return the probability mass function = FALSE or omitted!