Question about Office Equipment & Supplies

1 Answer

Bought a Sigma TR7112 calculator about 8 months ago, used a few times then, but haven't used it recently. Have been trying to make it work for the last two days, even left it on the windowcil in daylight, no luck. Any suggestions? It has hardly ever been used.

Posted by on

1 Answer

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

The same thing happened to mine. Although it's dual power if the battery dies it won't work. Unscrew the back off the calculator and you will see a flat button battery, replace it and it will work again.

Posted on Mar 27, 2014

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

2 Answers

My Ti-84 plus silver is giving me wrong answer when I use normalcdf. I used video guide to make sure my entries were correct. lower:280 upper: 1E99 mu:272 sigma:9 I get answer .81296 the video and correct...


That is what I get with your numbers on the TI84 Plus Silver Edition 0.1870313608. I get the same on the TI83 Plus. What can I say?. Apart from an error entering the numbers ( a 6 for a 9, a 3 for an 8) I cannot think of anything else. Sorry.

Oct 26, 2013 | Texas Instruments TI-84 Plus Silver...

Tip

Thanks! My 4 year old MP3 player - Creative Zen with a 8 gig Seagate ST 1.2...


My hard drive was dead and wasn't recognized by the computer, it didn't even start, just a few clicking noises, which according to some of the experiences is the same as a DEAD Hardisk. Anyways, as I read that sometimes this happens as a result of a hit, well, I wacked my HD as a last hope for it to recover its "memory" (as in the movies) and believe me or not, it worked! I don't know if this might help yours, but it saved mine! 
The way I did it was like this: I started the pc and when the HD started to run and I heard a couple of clicks, I hit it against the table while in vertical position (assuming that the arm of the HD might slightly move better that way) one time, and then when the spinning and the first click was heard agin I hit again. After that I heard the typical searching sound of a HD, and you can imagine I started to pray that what I heard wasn't my anxiety sound (if it has any). Now I am a firm believer in the old trick of whacking the old TV to get the vital signal back! 
Good luck to you too!

on May 20, 2009 | Western Digital 250GB MyBook External USB...

1 Answer

My son went to turn on his TI-84 Plus calculator and it wouldn't go on. He had used it in class a few hours before. We tried replacing the AAA batteries, but that didn't work. We tried replacing the...


TI calculators have an annoying habit of dimming the screen when the batteries are changed so that it appears as if the calculator isn't turning on. Turn the calculator on (or at least press the ON key). Press and release the 2ND key. Press and hold the Up-arrow key for a few seconds and see whether the screen becomes legible.

If this doesn't do it, please reply to this post and we can go on from there.

Feb 01, 2011 | Texas Instruments TI-84 Plus Silver...

1 Answer

My TI-89 will not turn on or respond in any way. The last time I used the calc was 4 months ago. I tried to turn it on a few days ago but it would not work so I changed the batteries. That didn't work and...


Take out one battery. While holding the "On" button, put the battery back in. I can honestly not explain what happened, but it has happened to me multiple times as well. You might have to do this more than once, but within a few attempts, it should start working again. Tell me how it works out, and hope this helps!

Oct 10, 2010 | Texas Instruments TI-89 Calculator

1 Answer

How do I use the standard deviation function?


  1. Calculator must be in SD mode (standard deviation mode) :Press [MODE] [.]
  2. However, if [FIX] or [SCI] appears on display you must press [MODE][9] first.
  3. Data input always starts with [SHIFT][SAC], to clear the registers of old data.
  4. Type a number and press the [DATA] key, it is the [M+] key at the bottom right of keypad.
After you finish entering the data

Press [SHIFT] [9] (sigma n-1) to get sample standard deviation
Press [SHIFT][8] (sigma n] for the population standard deviation
Press [SHIFT] [7] (xbar) for the mean
Press [SHIFT] [6] (n) for the number of data entries
Press [SHIFT] [5] (capital sigma x) for the sum of values
Press [SHIFT] [4] (capital sigma x to y) for the sum of squares of the values

For additional information you might consider taking a look at the calculator manual.

Apr 30, 2010 | Casio FX-260 Calculator

1 Answer

How to use that standard deviation on the Casio fx-260solar calculator


  1. Calculator must be in SD mode (standard deviation mode) :Press [MODE] [.]
  2. However, if [FIX] or [SCI] appears on display you must press [MODE][9] first.
  3. Data input always starts with [SHIFT][SAC], to clear the registers of old data.
  4. Type a number and press the [DATA] key, it is the [M+] key at the bottom right of keypad.
After you finish entering the data

Press [SHIFT] [9] (sigma n-1) to get sample standard deviation
Press [SHIFT][8] (sigma n] for the population standard deviation
Press [SHIFT] [7] (xbar) for the mean
Press [SHIFT] [6] (n) for the number of data entries
Press [SHIFT] [5] (capital sigma x) for the sum of values
Press [SHIFT] [4] (capital sigma x to y) for the sum of squares of the values

For additional information you might consider taking a look at the calculator manual

Apr 27, 2010 | Casio FX-260 Calculator

2 Answers

Standard Deviation


Hello,
If you want to do statistics with this calculator you press [MODE][3:STAT]. You have then 8 options 1:1-var, 2:A+BX, etc.
For one variable statistics you press 1. Enter the values for the X variable in the template. Once finished you press [SHIFT][1](STAT) then select the value you want ( n, x bar , and the standard deviations (X sigma n) and (X sigma n-1).
Hope it helps.

Jul 30, 2009 | Casio fx-300ES Calculator

2 Answers

Mean (x-bar), variance (s^2) and standard deviation (s)


Enter 1 then press the (SIGMA)+ button (SIGMA) looks like a sideways capital M ....its a Greek letter.

Then enter 2 and press the (SIGMA)+ button
Then enter the next value and press the (SIGMA)+ button

After you press the (SIGMA)+ button the calculator displays the number of numbers you have entered

Once all numbers of your sample have been entered press 2nd and the button corresponding to x-bar

sample st. dev is the (sigma)n-1 button (need to use 2nd button)
variance is (std. dev.)^2

population st. dev is the (sigma)n-1 button (need to use 2nd button)
variance is (std. dev.)^2

Jan 18, 2008 | Texas Instruments TI-30XA Calculator

1 Answer

75-200mm Sigma Lens Darkens


Hi the lens has a lock on the iris ring and on your  D100 it must be locked on the RED nuumber. 

Nov 02, 2007 | Sigma 75-300mm f/4-5.6 DL Lens for Nikon...

Not finding what you are looking for?
Office Equipment & Supplies Logo

Related Topics:

533 people viewed this question

Ask a Question

Usually answered in minutes!

Top Office Equipment & Supplies Experts

kakima

Level 3 Expert

102366 Answers

k24674

Level 3 Expert

7993 Answers

yadayada
yadayada

Level 3 Expert

70347 Answers

Are you an Office Equipment and Supply Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...