方差计算器

Variance measures how far each number in a set is from the mean. It is the square of standard deviation and represents the dispersion of data points around the mean. Variance is used in risk assessment, portfolio theory, quality control, and statistical analysis. Sample variance (using n-1) 提供 an unbiased estimate when working with a sample of a larger population.

输入您的 dataset values separated by commas, spaces, or new lines. 选择 whether your data 是一个 sample or population. The 计算器 displays variance, standard deviation, sum of squares, degrees of freedom, and 提供 interpretation of the variance level (low, moderate, high, or very high).