Grouped Mean / Median
Statistics
Class-interval table with assumed-mean & step-deviation methods.
Frequency table
| Low | High | Frequency | |
|---|---|---|---|
Results
Frequently asked questions
▶What does the Grouped Mean / Median do?
The Grouped Mean / Median is an interactive statistics lab where you change inputs and the answers update live, helping you build intuition without doing the arithmetic by hand.
▶Who should use the Grouped Mean / Median?
Students from primary to senior secondary classes, parents helping with homework, and anyone revising statistics can use this lab to check answers and explore "what-if" scenarios.
▶Is the Grouped Mean / Median free to use?
Yes. Every lab on math.suparnpatra.com is free and runs entirely in your browser : nothing is sent to a server.
▶Does the Grouped Mean / Median work offline?
Once the page is loaded, all calculations run locally in JavaScript, so you can keep using it even on a flaky connection.
▶How accurate are the results?
Results use standard JavaScript double-precision arithmetic and the textbook formula for statistics. We never display scientific notation : numbers are shown as ordinary decimals you can read at a glance.