statistics code snippets in ruby

find the mode of all values in a map in ruby

find the standard deviation of a list of numbers in ruby

find the standard deviation of all elements in an array in ruby

find the standard deviation of all values in a map in ruby

find the variance of a list of numbers in ruby

find the variance of all keys in a map in ruby

find the variance of all values in a map in ruby

get a random number from a normal distribution with a mean of 0 and a standard deviation of 1 in ruby