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How to find an estimate of the Mean for Grouped Data
In the previous section I have explained to you what Mean, Mode and Median are and how to calculate them. You already understand that the mean is the sum of all the values divided by the amount of values. On your IGCSE GCSE maths exam you will very likely however to calculate an estimate of the mean when given a grouped frequency table? The following two maths videos will explain to you how you calculate an estimate of the mean when given a grouped frequency data. Study the example questions well during your maths revision and tell me if you need more help with your maths!
I quite enjoy this poster. I have it in my classroom but most students do not understand its message. The day I teach mean, mode and median, students suddenly start laughing for finally they understand the joke. Do you get it?

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