Revision Bites - Grouped data mean standard deviation continuous discrete statistics A Level IB Math

Formula to find midpoint or midvalue using upper class boundary and lower class boundaries to calculate estimated mean or standard deviation from grouped discrete or continuous frequency table data. This is a short extract from these full length videos:
Casio Graphic    • Continuous Data? Mean & Standard Deviation...   Casio Classwiz:    • Casio Classwiz - Mean & Standard Deviation...  

Revision Bites for A Level, AS Level and IB Mathematics. These are short extracts of longer tutorials on how to use your Casio Classwiz FX-991EX or Casio Graphical Calculator FX-9750gii FX-9860gii FX-CG50 or equivalent, showing key revision facts to watch when preparing for a test or exam. Follow my playlists or make your own!

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How to use your Casio Classwiz Series:
   • Casio classwiz -  Intro Guide - Can I use ...  


How to use your Casio Classwiz FX991EX Calculator Revision Series:
   • Casio classwiz -  Intro Guide - Can I use ...  


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Mr Tompkins is a qualified teacher with 20+ years classroom experience. BSc (Hons) Mathematics, Post Graduate Certificate in Education, Certified Apple Teacher and Microsoft in Education (MIE) Trainer.

I am using the fx-991EX in this video, which is functionally equivalent to the FX-570EX, FX-991D EX, FX-87DE X and FX-JP900. MrTompkinsEdTech is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com.