Calculadora de Desvio Padrão

The Standard Deviation Calculator computes the sample standard deviation of up to 7 numeric values. The standard deviation measures data dispersion around the mean, indicating how much values vary. The formula used is s = √(Σ(xᵢ−x̄)²/(n−1)), where x̄ is the mean and n is the sample size. This tool is essential for quick statistical analysis, especially with small datasets.

To use the calculator, enter values separated by commas, spaces, or line breaks. The result shows the sample standard deviation, which uses n−1 in the denominator to correct bias in small samples. This differs from population standard deviation, which divides by n. It is useful for analyzing test scores, lab measurements, or price variations, helping understand data consistency.

Important caveats: the calculator accepts only numeric values (positive or negative), no text. Ensure your data represents a sample, not a whole population. If you have more than 7 values, consider a more robust tool. Remember that standard deviation is sensitive to outliers, so extreme values can inflate the result. To interpret, compare the standard deviation with the mean: a large value indicates high variability.