In my case instead of using mean and std. dev., I am using median and rank statistics for outliers like inter-quartile range. Could be an interesting follow-up exploration / nice segue into robust statistics.

]]>My school uses Autograph, which I very much dislike, so I made these which are far easier to interact with. I give the students a link to the applets on GeoGebraTube and they play around with them to get a feel for each numerical method. It’s way too complicated for them to try to build themselves. They use Excel to do the requisite mathematics for the coursework, and they are allowed to put screenshots of these applets in their submission.

Change of sign is dead easy – just use Excel.

Best wishes

Micky

Any chance you can send me some info on how you made this and the other ggb for MEI cw?

Saf ]]>

Also, for the C3 CW, do you just give them this applet and ask them to enter the equation they are working with or get them to make it from scratch?

]]>Thank you ]]>