📊 Statistics Calculator
Mean, median, mode and standard deviation
About this calculator
Turn a list of numbers into meaningful insights. Paste or type your dataset and the calculator computes the mean, median, mode, range, variance, standard deviation, and quartiles, plus a simple frequency summary. Standard deviation is the key number — it tells you how spread out your data is around the average, which is how you judge consistency in anything from test scores to manufacturing.
Tip: when your data has outliers, the median is usually a more honest "typical value" than the mean.