Mathématiques Archives

Population variance

Calculate the dispersion of a series by dividing by the total number of values.

Measure dispersion in the same units as the original values.

Calculate the difference between the largest and smallest values.

Find the middle value of a sorted series.

Quickly add several positive or negative numbers.

Calculate the average of a series of numbers.

Find a missing value in a proportion using three known values.

Increase a value by the specified percentage.

Find the original value before a known percentage increase.

Express part of a total as a percentage.