To calculate the variance of a discrete random variable, use the formula σ2=Σ (xi-µ)2pi. To use this formula, subtract the mean from each data value, square each result, multiply each of …

Dec 10, 2025 · Variance is a measure of how spread out a data set is, and we calculate it by finding the average of each data point's squared difference from the mean. It's useful when …

Nov 4, 2025 · Step 3: Calculate the average of the squared differences of the given values, which is called the variance of the data set. (Variance = Sum of Squared Differences / Number of …

Mar 23, 2022 · Learn how to calculate variance, what it means, how to use the formula and the main differences between variance and standard deviation.

It is calculated by taking the average of the squared differences from the mean. The square root of the variance is the standard deviation. While variance gives you a rough idea of spread, the …

To find the variance, take a data point, subtract the population mean, and square that difference. Repeat this process for all data points. Then, sum all of those squared values and divide by …

Variance is a measure of the variability of the values in a dataset. A high variance indicates that a dataset is more spread out. A low variance indicates that the data is more tightly clustered …

To calculate the variance follow these steps: Then for each number: subtract the Mean and square the result (the squared difference). Then calculate the average of those squared …

Nov 4, 2025 · Calculates variance and standard deviation for a data set. Calculator finds variance, the measure of data dispersion, and shows the work for the calculation.

Jan 18, 2023 · The variance reflects the variability of your dataset by taking the average of squared deviations from the mean.