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Label Given data from 2 or more different samples, it is tested if at least 2 samples among all have different variances. The statistical test used here is called Levene's Test. It is a robust test that does not require the data to be normally distributed.This test can assist users to make decisions such as:

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In a company, historic data indicate that the sales variance was $200 per transaction. After training your sales team, recent sales data (taken from a sample of 40 salesmen) indicates a variance of $150. Considering the data is not normally distributed, did the training reduce the variation?
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As a supervisor of an administrative process, you have developed a different method to perform a task. Preliminary analysis shows the data is not normal. Now you wish to confirm statistically if the variation of the new method is smaller.
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You have 5 groups of people submitted to different versions of a drug. Now you wish to know if all the versions have the same variation or not.

Label Just log in or sign up and follow the steps below. You can hover over the options for additional information.

 

Step 1) Paste your sample data in the text box. (1 row for each sample, such as demonstrated below)

Step 2) I'd like to have  confidence level in this statistical test.

  

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