# Is it possible to find the sum of squared error on fx-991EX?

### #1 financialwar

financialwar

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FX-991EX

Posted 15 October 2016 - 05:23 AM

Is it possible to find the sum of squared error of a simple linear regression on fx-991EX?

### #2 pan.gejt

pan.gejt

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fx-880, fx-6300G, fx-9700GE, fx-9860G Slim, Classpad 330-A, TI-Nspire + keypad, TI-Nspire CAS, TI-Nspire CX CAS,TI-89 Titanium, HP-50g, SEC-101, fx-991ES PLUS, fx-991DE PLUS, fx-CP400, Canon X MARK I PRO, Citizen SRP-75,

Posted 17 October 2016 - 12:26 PM

You have 2 possibilities

1. Calculate regression in Statistics mode, recall variables (see the page 21 of the UG) and use them for manual calculation of the SSE - see the formula on the pages 14.9, 14.18 and 14.19

2. Calculate the complete regression and the SSE manually in spreadsheet mode - see the formulas on the pages 14.9, 14.11 and 14.19, except these formulas you need to compute all variables to determine b0, b1 and SSE - n, sum x^2, sum xy, average x, average y, (average x)^2, sum y^2, sum y,

A nice tutorial with formulas and exercises, pages 14-9 to 14.19

http://www.cse.wustl...ftp/k_14slr.pdf

Edited by pan.gejt, 17 October 2016 - 01:57 PM.

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