Statistics How To

Variance in Minitab: How to Find it

Variance > Variance in Minitab

Watch the video to find a sample variance in Minitab or follow the steps below:

How to find the Variance in Minitab: Steps

variance in minitab

The sample variance formula.

Variance is a measure of variability in statistics. In other words, it gives you an idea of how far a data set is spread out. Variance can range from 0 to infinitely large. A variance of zero means that the numbers in a set are all the same. The larger the variance, the more spread out the data set. You can calculate the variance by finding the mean, subtracting the mean from each number in the set, squaring the result and then averaging the squared difference — or, you can let Minitab take care of the hard work for you!

Example question: Find the variance for the following sample: 12, 13, 24, 24, 25, 26, 34, 35, 38, 45, 46, 52, 53, 78, 78, 89

Step 1: Type your data into a column in a Minitab worksheet.

Step 2: Click “Stat”, then click “Basic Statistics,” then click “Descriptive Statistics.”

Step 3: Click the variables you want to find the variance for and then click “Select” to move the variable names to the right window.

Step 4: Click “Statistics.”

Step 5: Check the “Variance” box and then click “OK” twice. The variance in Minitab will be displayed in a new window. The variance for this particular data set is 540.667.

That’s it!

Tip: Check out our online standard deviation and variance calculator!

------------------------------------------------------------------------------

Need help with a homework or test question? With Chegg Study, you can get step-by-step solutions to your questions from an expert in the field. Your first 30 minutes with a Chegg tutor is free!

Statistical concepts explained visually - Includes many concepts such as sample size, hypothesis tests, or logistic regression, explained by Stephanie Glen, founder of StatisticsHowTo.

Comments? Need to post a correction? Please post a comment on our Facebook page.

Check out our updated Privacy policy and Cookie Policy