Posts filed under Uncategorized

Confused with Mean, Mode, Median, Average, Standard Deviation, Range? Have a TI89 Calculator? Here is how to do it!

Here is the quick way to find Mean, Mode, Median, Average, Standard Deviation, Variance, Range and more using the trusted TI89 : Just enter the list of numbers as shown in the image above. Press ENTER and Voila, all values are shown immediately. This is part of the comprehensive Statistics Made Easy app for the… (read more)

Chemistry App for the TiNspire CX CAS at has been updated : Bases, Acids, Equilibrium, Dissociation Constant, Valence Electrons

It seems that the Stoichiometry section of our Step by Step Chemistry App has doubled over the last few months, lots of new computational Chemistry has been added. Find app updates below: – Valence Electrons of Atoms and Molecules – Equilibrium Constant Kc – Equilibrium Composition – Kp = Kc*(RT)^n – Equilibrium of weak bases… (read more)

How to perform a Z-Test Step by Step on the TI 89 using Statistics Made Easy

Here is a sample problem: A student who works in the blood lab plans to test the hypothesis that the mean cholesterol level of men is less than 230 mg/dL. The population variance of cholesterol level is assumed to be (40 mg/dL)^2. The student tested nine men for cholesterol levels and found the following values… (read more)

Ti Connect software update

Tip of the day: In addition to the familiar TI Connect software – used to transfer TI89 apps from a computer to a TI89 – there now exists TI Connect CE software that only works for TI84 calculators. So if you mistakenly try to transfer ti89 apps using the CE version you will run into… (read more)

How the TI-84 Plus Became Americas Most Popular Graph Calculator – A Brief History

Get These 17 Awesome TI 84 Calculator Games Today!

Stuck on Calc 101 for CSE? We have got the Graph Calculator for You.. Update: Right Triangle Checker

New TI89 APPS giveaway puzzle

Cayley Hamilton procedure on the TI89 step by step

The Cayley Hamilton is a nifty procedure to find the inverse of a matrix using the characteristic polynomial of a given square matrix. So no Row Echolon or similar is needed. We just included this Cayley Hamilton in the Linear Algebra Made Easy TI89. Best of all complete steps are shown until the inverse matrix… (read more)