linear regression equation calculator on ti 30

Linear regression equation calculator on ti 30 how to#
Linear regression equation calculator on ti 30 manual#
Linear regression equation calculator on ti 30 plus#
Linear regression equation calculator on ti 30 free#

I hooked the TI-30 up to a DC power supply outputting 9.0 V measured by a multimeter. One day, I found myself in electronics class when another cell died. Mine came with a rechargable 9V battery that quickly lost its ability to accept and retain a charge. This is obviously a stab at the rechargeable batteries of the HP's of the time.

Linear regression equation calculator on ti 30 manual#

I took the manual out of its incredibley ugly case.

My first calc was a TI-30 from about 1977 or '78. Message #5 Posted by Karl Schneider on, 3:04 a.m., It has seen heavy use, but it's still working perfectly. I had it fixed, still under warranty, sold it, and bought a HP-41CV.

Linear regression equation calculator on ti 30 plus#

I had my TI-59 for a year, and by then 40% of its keys were bouncy and/or needed high pressure to register, plus the card reader was partially broken (it didn't sense anymore when a card was through and just kept on running). Message #4 Posted by Victor Koechli on, 3:08 a.m.,

Had the same problems with a TI-30 except that the keys became defective much quicker. My first programmable (way back in 1979) was a TI-58 which I still have but the keyboard is very poor, difficult to use quickly and after five or six years a couple of the keys became very unreliable - had to press very hard to register and then they tended to register 2 or 3 times. Message #3 Posted by james (uk) on, 2:01 p.m., It could handle basic scientific calculations for 'Science 101' classes. This model was roughly the equivalent of an It was going after the student market for a basic calculator. In the TI-30, TI was hardly attempting to compete with HP. I have a TI-58C with excellent tactile feedback, although I believe that this is a model that was produced a bit later. TI had much higher quality calculators of superior construction at the time. The nice thing about the TI-30 was that it was cheap. Message #2 Posted by rsenzer on, 1:20 a.m., I just found it interesting the ways that companies can make a bad feature sound good. I showed this to my friend (who perfers his TI's) and he was amazed. You can take weeks of computing power with you wherever you go by simply carrying a few spare batteries.' 'Disposable battery power source provides independence from AC power supplies. This is quite obviously a stab at RPN (as by 76, HP had a good many calculators out). 'Algebraic mode of entry allows you to enter mathematical sequences in the same order that they are algebraically stated' I started reading, and one of its features reads: It most definitely does not have the click (even pressing a button for an instant will cause it to register 2 or 3 presses) I took the manual out of its incredibley ugly case in order to find the date it was made. I then realized, well maybe the TI-30 that I took from my grandmother's house has that same click, so I took it out, and tried punching a few buttons. I was actually discussing HP calculators with a friend just right now, and I was telling him about the 'click' which I have never felt. No, this post is not glorifying the 1976 TI-30. Message #1 Posted by Ben Salinas on, 11:49 p.m.

Linear regression equation calculator on ti 30 free#

For example, if x = 8, then we would predict that y would be 14.11:īonus: Feel free to use this online Logarithmic Regression Calculator to automatically compute the logarithmic regression equation for a given predictor and response variable.TI-30 Manual Humor from 1976 The Museum of HP Calculators We can use this equation to predict the response variable, y, based on the value of the predictor variable, x. We can use the coefficients in the output to write the following fitted logarithmic regression equation: Then scroll down to LnReg and press ENTER twice. Next, we fill fit the logarithmic regression model. Step 2: Fit the Logarithmic Regression Model Then enter the x-values of the dataset in column L1 and the y-values in column L2:

Linear regression equation calculator on ti 30 how to#

The following step-by-step example shows how to perform logarithmic regression on a TI-84 calculator for the following dataset:įirst, we will enter the data values.

a, b: The regression coefficients that describe the relationship between x and y.

The equation of a logarithmic regression model takes the following form: Logarithmic regression is a type of regression used to model situations where growth or decay accelerates rapidly at first and then slows over time.įor example, the following plot demonstrates an example of logarithmic decay:įor this type of situation, the relationship between a predictor variable and a response variable could be modeled well using logarithmic regression.