Standard Deviation & Percentage Calculator in One

Stats homework can feel like a slog, especially when you're staring at a long list of numbers and trying to remember whether to divide by n or n-1. Our standard deviation calculator does the heavy lifting in one step: paste your data, hit calculate, and get population standard deviation, sample standard deviation, variance, and the mean instantly. No more squaring differences by hand or losing points to a typo on your TI-84. We built this to feel less like a textbook and more like a percentage calculator you'd actually want to use between classes or right before a deadline. It works in your browser, on your phone during the bus