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.

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 · Variance is defined as the square of the standard deviation, i.e., taking the square of the standard deviation for any group of data gives us the variance of that data set.

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

The larger the variance, the more spread a set of data is. The variance is the square of the standard deviation. The units of variance are the square of the units measured in the data set. …

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 …

In the variance calculator: Choose sample if your data are a subset of an entire population and you want to estimate the population value. Choose population if your data contain all the …

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 …

Dec 1, 2025 · To calculate the variance (σ 2) for a population of normally distributed data: Step 1: Determine the mean of the data values. Step 2: Subtract the mean of the data from each value …

Apr 12, 2025 · Variance tells us how spread out the numbers are in a data set. If your numbers are all close to the average (mean), you’ll have a low variance. If the numbers are all over the …