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Questions & Answers
TI-82:blank screen like a dead
The TI82 is a bit old Technology and if you did not use for a few years the screen is dead its a common problem with this model and the TI83
sorry for not been a big help
on Feb 09, 2019
Screen fade and return
weak battery, or loosen display.....
change battery.... if doesn't help,. open device and check screews that are holding display, if it's loosen, tight it up
on Apr 25, 2014
Adjust screen brightness
Turn the calculator on, press and hold the 2nd button, then press the up-arrow button to increase the contrast or the down-arrow button to decrease the contrast. If you go too far, release both buttons, press and hold the 2nd button, and press the appropriate arrow button.
on Nov 28, 2013
How do i find grouped data in L1 and L2 on ti 82
I am not sure I understand but if it the same problem as in your other posted question, here is what I wrote.
Are the data in
L1 and l2 in any way related? If they are (being x-values and y-values
of some data set) then you need to do regression analysis (2-var stats)
If they are not related (connected) you can calculate the mean of each group separately.
1-var stat by specifying the L1 list first (may be the default), get
your average of the values in L1. Then you can do 1-var stat on the data
in L2 by specifying the list L2 on the command line.
1-var L2 ENTER
Note: What I am describing here is valid for the TI 83 Plus/TI84 Plus, but I suspect the steps are similar to the TI 82.
on Oct 08, 2013
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