salsadip01 Posted October 26, 2008 Report Share Posted October 26, 2008 does anyone know how to use their Graphic Display Calculator to find the mean in a grouped frequency table? i can do it without it.. but i also need to know how to use the GDC.. i've got the TI-84 Plus texas instrument.. (like in the attachment) Reply Link to post Share on other sites More sharing options...
Jernej Posted October 26, 2008 Report Share Posted October 26, 2008 I am not sure what exactly you are trying to calculate. I found online [b][url="http://education.ti.com/guidebooks/graphing/84p/TI84PlusGuidebook_Part2_EN.pdf"]manual for TI-84 (click)[/url][/b], where you should find everything you want to know about this (great) GDC. Parts of the manual, which I think should answer your question are: [img]http://fiona.t-2.net/kakarun/pg307_man.png[/img] (Page 310) [img]http://fiona.t-2.net/kakarun/pg590_man.png[/img] (Page 593) I hope this helps you. Reply Link to post Share on other sites More sharing options...
dss1990 Posted October 27, 2008 Report Share Posted October 27, 2008 Go to Stats --> Edit --> Feed the mid point values in L1 ---> Freq in another column (L2). Now Press 2nd + Mode to quit. Press clear button to clear the screen. Now, press Stat button --> press the right button that will take you to Calc options ---> then take the first option that is 1 - Var Stats --> Enter U will see everything that is needed. Press the down button to see IQR, median, extra... Hope that helps Regards and Cheers Reply Link to post Share on other sites More sharing options...
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