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Class Average Calculator

Calculates mean, median, standard deviation, pass rate and grade distribution from a list of scores.

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Enter your figures and press Calculate.
In short Class Average Calculator is a free online tool on inputtesthub.com that calculates mean, median, standard deviation, pass rate and grade distribution from a list of scores. It needs no account, no download and no payment, and there is no daily usage limit. Everything is processed inside your own browser, so the data you paste is never uploaded to a server.

How to use the Class Average Calculator

  1. Enter your figures in the input fields.
  2. The result updates as you type, together with the full working.
  3. Check the breakdown table to see exactly how the number was reached.

About the Class Average Calculator

The Class Average Calculator calculates mean, median, standard deviation, pass rate and grade distribution from a list of scores. It runs as plain JavaScript inside the page, which means there is no upload step, no queue and no size limit imposed by a server — the only limit is your own device.

What people use it for

  • Marking a class set of papers.
  • Seeing whether a low average is the class or a few outliers.
  • Reporting a grade distribution.

Details

Mean below medianA few low scores are dragging it
Small deviationEveryone did much the same
Large deviationTwo different groups hidden in one average

The maths behind it

This tool uses Mean is the sum divided by the count; median is the middle value; standard deviation measures how far scores typically sit from the mean. Every intermediate value is shown on screen, so the result can be checked by hand.

Compare mean against median before drawing conclusions. When the mean sits well below the median, a few very low scores are dragging it down and the average is describing those few rather than the class.

Frequently asked questions

Is the Class Average Calculator free?
It is free, with no account, no trial and no daily cap. Every calculators tool on inputtesthub.com works the same way: open the page and use it.
Is the Class Average Calculator safe to use with private information?
No. The Class Average Calculator runs entirely in your browser using JavaScript. Your input never reaches inputtesthub.com or any third party — open your browser's Network tab while you use it and you will see no request go out.
What is the equation behind the Class Average Calculator?
It uses Mean is the sum divided by the count; median is the middle value; standard deviation measures how far scores typically sit from the mean. The full working is printed under the result, so you can follow every step rather than trusting a black box.
When would I actually need the Class Average Calculator?
The most common reasons people reach for it: marking a class set of papers. Seeing whether a low average is the class or a few outliers. Reporting a grade distribution. It is built for exactly those cases rather than being a general-purpose tool with this bolted on.
Any caveats I should know about?
Compare mean against median before drawing conclusions. When the mean sits well below the median, a few very low scores are dragging it down and the average is describing those few rather than the class.
What are the reference figures here?
Mean below median is A few low scores are dragging it. Small deviation is Everyone did much the same. Large deviation is Two different groups hidden in one average. These are printed on the page itself, so you do not have to take them on trust.
Is the number rounded?
The calculation runs in double precision and the result is shown to ten significant figures, so converting a value and converting it back returns the original. What is displayed is rounded for readability; what is copied is not.

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