Casio fx-9750GII Graphing Calculator， Blue<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Chi-squared GOF function</li><li>New types of regressions</li><li>Random Integers</li><li>Unit Conversion</li><li>REF/RREF Function</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41u9qQyyojL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41grdBUU7zL.jpg" noproxy>