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How to Calculate Z Score in Excel: What You Need to Know

We get it. Statistics can be intimidating. All those numbers and all those graphs and all of the rules on how to interpret everything - it's enough to make your head spin. Which is why we're happy to tell you that some things can be less stressful with the use of modern technology. Specifically, the little helper we're talking about is - no surprise - Microsoft Excel. Keep scrolling to learn everything you need to know about how to calculate z score in Excel. You'll be glad you did. It's easier than you think to learn how to calculate z score in Excel!

Z-Score Fundamentals

First things first! We need to break down the whole concept of a z score. Getting some clarity on the topic will make it that much easier to learn how to calculate a z-score in Excel when the time comes. You have to learn to walk before you can run, right?

What Is a Z Score?

What Does a Z Score Do?

Easy Real World Z Score Example

The Z Score Formula


Actually, depending on what you're using the z score for, there are two different z score formulas to choose from - and choosing the right formula is important. But rest assured that for any z score formula you will need two numbers: the mean (μ) and also the population standard deviation (σ). You will need both of these when you learn how to calculate the z-score in Excel.

The Basic Z Score Formula

Standard Error of the Mean

How to Calculate the Z Score in Excel


Now that you know what a z score is and the basic formula you will be using, it's time to learn how to calculate z score in Excel. Be prepared by having your data points easily accessible and be forewarned that there will be a lot of data entry. Just as a reminder - double check your numbers and always calculate your z score twice!

Step 1: Open Excel

Step 2: Enter the Mean Formula

Step 3: Enter the Standard Deviation Formula

Step 4: Finding the Z-Score

Conclusion


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image source: unsplash.com via Helloquence

See how easy that was? Learning how to calculate z score in Excel is a cakewalk because Excel does all the really hard work for you. Of course, the job of interpreting what the z score means still falls to your shoulders, but at least you don't have to make your head ache by hand-writing and calculating the z score formula. Simply use Excel to find your mean formula and your standard deviation, and then you're only one simple input away from finding the z score for any point of data you want.

Still not seeming so simple? Try it for yourself! Trust us, it gets easier after inputting the formula a few times!

Featured Photo by rawpixel.com from Pexels

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