stats_harmonic_mean

(PECL stats >= 1.0.0)

stats_harmonic_mean — Returns the harmonic mean of an array of values

说明

stats_harmonic_mean ( array $a ) : number

Returns the harmonic mean of the values in a.

参数

a

The input array

返回值

Returns the harmonic mean of the values in a, or FALSE if a is empty or is not an array.

相关文章
php gnupg 函数 returns an array with information about all keys that matches the given patternphp maxdb 函数 returns an array of resources representing the fields in a result setphp mssql 函数 returns an associative array of the current row in the resultphp oci8 函数 returns the next row from a query as a numeric arrayphp postgresql 函数 returns an array with client protocol and server version when available php session 函数 re initialize session array with original valuesphp statistic 函数 returns the absolute deviation of an array of valuesphp statistic 函数 calculates any one parameter of the cauchy distribution given values for the othersphp statistic 函数 calculates any one parameter of the chi square distribution given values for the othersphp statistic 函数 calculates any one parameter of the exponential distribution given values for the othersphp statistic 函数 calculates any one parameter of the f distribution given values for the othersphp statistic 函数 calculates any one parameter of the gamma distribution given values for the othersphp statistic 函数 calculates any one parameter of the laplace distribution given values for the othersphp statistic 函数 returns the harmonic mean of an array of valuesphp statistic 函数 computes the kurtosis of the data in the arrayphp statistic 函数 get the seed values of the random number generatorphp statistic 函数 returns the percentile valuephp statistic 函数 returns the power sum of a vectorphp statistic 函数 returns the variancephp hyperwave api 函数 returns all values of the attribute
关注编程学问公众号