Standard Deviation
GeneralStatistical Measure of Data Variability
A measure of how spread out values in a dataset are around the mean โ a low standard deviation means data points cluster tightly; a high one means they are widely dispersed.
Related Calculators
Standard Deviation Calculator โCalculate mean, variance, and standard deviation for any dataset. Enter comma-separated numbers to get population and sample statistics with step-by-step breakdown. Free tool.
Statistics Calculator โCalculate mean, median, mode, range, and standard deviation for up to 10 numbers. Essential for students, data analysts, and researchers.
Z-Score Calculator โCalculate z-score, percentile rank, and probability for any data point. Enter value, mean, and standard deviation to find where it falls in the distribution. Free online tool.