BrownMath.com → TI-83/84/89 → MATH200B Tech Notes
Updated 27 Dec 2015

MATH200B Program — Technical Notes

Copyright © 2007–2017 by Stan Brown

Summary: This document contains the details of variable usage by the MATH200B program, and it’s probably of no interest to you unless you’re programming the TI-83/84 yourself. If you are, you should also look at MATH200Z Program — Technical Notes for technical details of the subprogram that is called by the MATH200B program.

If you just want to use the statistics utilities in the MATH200B program, please see MATH200B Program — Extra Statistics Utilities for TI-83/84.

Most parts of the MATH200B program leave useful results in variables, which you can use for further calculation. Use the [ALPHA] key. For instance, if you want a value from variable V, press [ALPHA 6 makes V]. Also, if you’re using any variables or statistics lists yourself, you don’t want to be surprised when the program changes their values. Below you’ll find complete information.

If you want to delete the lists to free up memory, press [2nd + makes MEM] [2] [4], scroll down to find each one, and press [DEL].

If you want to delete the single-letter variables, though it’s hardly worth the effort, press [2nd + makes MEM] [2] [2], cursor to each one, and press [DEL].

Program startup

1:Skew/kurtosis (calls MATH200Z with θ = 10)

For a probabiliy distribution (N=1), V, S, and K will be the population values. If N≠1, V, S, and K will be the “as sample” values.

2:Time series

3:Critical t

4:Critical χ²

5:Infer about σ (calls MATH200Z with θ = 100)

6:Correlatn inf (calls MATH200Z with θ = 200 and 100)

7:Regression inf (calls MATH200Z with θ = 200 and 100)

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