Calculate the average (mean), standard deviation and median

Input numbers below. Each number in its own row (max. 500):

The counter calculates the following: count of numbers, standard deviation, average. In addition, you get the numbers arranged from the smallest to the largest. Separate numbers by newline. Click the 'Calculate' button to get the result. For example, you can easily calculate the average grade of a school certificate. The average is calculated by summing all the numbers and dividing the result by the count of numbers. Standard deviation is also a useful indicator. It describes how much the numbers differ from the average on average.