The variance that is computed using the sample data is known as the sample variance. Sample variance can be defined as the average of the squared differences from the mean.

How to find the sample variance and standard deviation in easy steps. Includes videos for calculating sample variance by hand and in Excel.

Jul 23, 2025 · In statistics, sample variance tells us how spread out the data points are from the average (mean) within a sample. Sample variance computes the mean of the squared differences of every …

Nov 4, 2025 · Variance is a measure of dispersion of data points from the mean. Low variance indicates that data points are generally similar and do not vary widely from the mean. High variance indicates …

Jan 18, 2023 · When you collect data from a sample, the sample variance is used to make estimates or inferences about the population variance. The sample variance formula looks like this:

Jan 2, 2025 · What are population and sample variances. Learn how to find them with their differences, including symbols, equations, and examples.

The sample variance is denoted with s2 and can be calculated using the formula: s2=∑(xi-x̄)2/ [n-1]. In this formula xi represents each of the data values, x̄ is the sample mean and n is the number of data …

There are multiple ways to estimate the population variance on the basis of the sample variance, as discussed in the section below. The two kinds of variance are closely related. To see how, consider …

Dec 10, 2025 · Read on for a complete step-by-step tutorial that'll teach you how to calculate both sample variance and population variance. Use the sample variance formula if you're working with a …

There are two formulas for the variance. The correct formula depends on whether you are working with the entire population or using a sample to estimate the population value. In other words, decide …