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I'm trying to calculate beta for statistics class and I'm entering all of the right info but getting the wrong answer. For example 0.5 x 1.645 x the square root of 0.50 x 0.50 divided by 698 i

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  • anna henning Dec 02, 2012

    It's supposed to be 0.5 + 1.645 NOT multiplication (x) in the first part of the problem

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6ya6ya
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Posted on Jan 02, 2017

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Mattimeo310
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SOURCE: TI-83 Plus No Longer Squares Correctly

when you type -2 imagine your calculator doing the equation: -1 x 2. The - sign actually stands for a -1 so when you do -2 squared your calculator is simply following order of operations. It first squares the 2 making it 4, then it multiplies the negative making it -4. In order to get around this you must use parenthese. (-2)^2.

Hope this helped

Posted on Nov 23, 2008

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SOURCE: What is wrong with my TI-89 calculator?

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Posted on Jun 06, 2009

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SOURCE: On my TI-30xs Texas Instruments, I cant figure out

Use the toggle button above the enter key. It looks like 2 arrows

Posted on Feb 18, 2010

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SOURCE: My TI-89 will not calculate the square root of 3

Press the diamond key, then press ENTER to convert a symbolic result to a decimal result. If you want them all in decimal form, press MODE then F2. Scroll down to Exact/Approx and change that setting to Approximate.

Posted on May 17, 2010

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SOURCE: How do a take a

Two ways:

2ND [square-root] ( 8 7 . 3 4 / 5 ) ENTER

8 7 . 3 4 / 5 ENTER then 2ND [square-root] 2ND ANS ENTER

The first sequence takes the square root of 87.34/5, the second sequence calculates 87.34/5 then takes the square root of the result.

Posted on Dec 15, 2010

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1 Answer

Why is my ti84 giving me wrong answers when I use trig functions?


Your right you should be in degree mode. However, my guess is you are somehow entering in cot wrong in your calc. Recall cot = 1/tan! In your graphing calculator enter: 35(1/tan(61) = 19.4.
Hope this helped!

Jul 09, 2014 | Texas Instruments TI-84 Plus Calculator

2 Answers

How do i recieve answers on the El-W535x SHARP calculator in decimals, need it for buisness class...so if you could answer that question and tell me of any other functions i might be unaware of that might...


Hi there,

My name is adieh.have a great day.

I will give a simple example on how to convert your answer into decimal form. Indicated below:

Q: Simplify 1/2-5/13 convert to decimal

Answer:

Step 1: Enter 1/2 by pressing 1>a/b>2.
Step 2: Subtract by pressing - (negative sign or minus sign)
Step 3: Enter 5/13 by pressing 5>a/b>13.
Step 4: Find the difference by pressing = (equals sign)
Step5: Convert to decimal by pressing (change)
You can find( change) on the right side of your calculator beside M+ key

I am suggesting you to visit this website http://files.sharpusa.com/Downloads/ForHome/HomeOffice/Calculators/Manuals/Archive/cal_man_ELW535B_TeachersGuide.pdf
for you to have further knowledge about various functions of your sharp calculator since you are attending a business/algebra class.

Hope it helps.

Thank you for using fixya.

Sep 22, 2011 | Office Equipment & Supplies

1 Answer

I am in a physics class and i need to calculate an angle using the inverse tan sign (tan-1) and i keep getting the wrong answer because my calculator is on a certain setting and i don't know how to change...


Your calculator is set to radians. To set it to degrees, press MODE, use the arrow keys to move to the "Angle" line, press right-arrow, press 2, then press ENTER.

Feb 21, 2011 | Texas Instruments TI-89 Calculator

1 Answer

How do I put my calculator in statistics mode?


The TI-30XA does not have to be switched to a statistics mode, the operations are available all the time. The choice of operations are somewhat limited; the calculator offers statistics functions for one dimensional data sets only (no linear interpolation of (x,y) value pairs, for example):
  • [2nd] [CSR] - erase statistics data
  • [mib8888_17.gif] - add a number to the sample set
  • [2nd] [mib8888_18.gif] - remove a number from the sample set
  • [2nd] [FRQ] - multiple entry of the same sample value
  • [2nd] [n] - sample set size
  • [2nd] [mib8888_19.gif] - sum of all sample elements
  • [2nd] [mib8888_20.gif] - sum of the squares of all sample elements
  • [2nd] [mib8888_21.gif] - average of the sample set
  • [2nd] [mib8888_22.gif] - standard deviation (sample set is a complete set)
  • [2nd] [mib8888_23.gif] - standard deviation (sample set is a subset of a larger set)
The calculator displays "STAT" if the current sample set is non-empty.

Example: calculate the average and standard deviation of the set { 3, 4, 5, 5, 5, 5, 6 }.
  1. [2nd] [CSR] - erase stat memory
  2. 3 [mib8888_17.gif] 4 [mib8888_17.gif] 5 [2nd] [FRQ] 4 [mib8888_17.gif] 6 [mib8888_17.gif] - enter the data, note the use of [2nd] [FRQ] to enter the four occurrences of "5". Entering 5 [mib8888_17.gif] four times would have done the same.
  3. [2nd] [mib8888_21.gif] - display the average of the set, (4.714...)
  4. [2nd] [mib8888_22.gif] - display the standard deviation of the set (0.8806...)

Jan 25, 2011 | Texas Instruments TI-30XA Calculator

1 Answer

Hello. I just wanted to ask you how do I calculate the variance and standard deviation in my cfx9850GB plus. I had a quick look at the manual but I couldnt find the info. thankz .


This shows you how to enter your data and calculate some statistical values. Keep in mind that the variance is the square of the standard deviation.


In the main menu select [STAT] icon to enter Stat mode and display the statistical data lists. Use the statistical data lists to input data and perform statistical calculations. Use the arrows to move the highlighting around the lists.
Example: Enter the following values in List 1
1st line enter 90 [EXE]
2nd line 85 [EXE]
3 79 [EXE]
4 75 [EXE]
5 70 [EXE]
6 68 [EXE]
7 56 [EXE]

When finished you press [F2:Calc], then [F1:1Var] and the statistical results appear on screen.

Title of screen : 1-Variable
x bar =74.7142857
Capital Sigma x= 523
Capita Sigma X squared = 39851
x lower case sigma n = 10.5249945
x lower case sigma n-1= 11.3682934
n = 7
Scroll down with Down arrow to access other data
minX =56
Q1=68
Med =75
Q3=85
Xbar -x lower case sigma n =64.1892911
x bar x lower case sigma n = 85.2392802
maxX=90
Mod=90

All you have to do now, is to look at the theory you learned and interpret what these values mean.

Sep 05, 2010 | Casio CFX-9850G Plus Calculator

1 Answer

How do you change the statistical mode on a TI-30XA?


The truth of the matter is that there is no statistical mode per se. You just start entering data in a specific sequence.
If there is data in the statistics register (remnant of and old calculation) you must start by clearing old values :[2nd][CSR].
Here is a screen capture with an example that uses frequencies.

05b56ce.jpg

Aug 14, 2010 | Texas Instruments TI-30XA Calculator

1 Answer

My 1-var stats button is not working it says the


Hi,
You will have to report faithfully the message returned, you cannot use your interpretation of the message. Error messages are codified. Each one will correspond to very particular error conditions. I did check the manual for all possible error messages and there is none that states wrong info.

My hunch is that there are errors in your data, but I can't say what type of error: I do not have the actual message returned. Verify you data, item by item, and try again.

To make sure that the calculator is well configured to do statistics
  1. Press [STAT][5:SetUpEditor][ENTER]
  2. Press [2nd][0] (CATALOG) and press [PRGM] (C) to jump to the first command starting with C.
  3. Scroll down to [ClrAllListsts] and press [ENTER]
  4. Calculator replies Done
Restart your statistical data entry.

Hope it helps.
Thank you for rating this solution

Dec 11, 2009 | Texas Instruments TI-83 Plus Calculator

2 Answers

How to sum series


Click on the Mode button twice until you see “SD”. Select 1. This puts the calculator in Statistics Mode. image001.gif Enter the first number, 1.
image001.gif Hit the M+. (n= 1 will appear in the window)
image001.gif Enter the second number, 1.
image001.gif Hit the M+ key. (n=2 will appear in the window)
image001.gif . . . . .
image001.gif Enter the last number, 7.
image001.gif Hit the M+ key. (n=7 will appear in the window)
image001.gif Hit shift, 2. (This invokes the S-Var option.)
image001.gif Hit 1 for the sample mean. Hit Enter.
image001.gif Hit 3 for the sample standard deviation that we will use in class. Hit Enter. here you can also ffind the sum of all numbers

Jan 21, 2009 | Casio FX-300MS Calculator

1 Answer

Half-life exponential problem. Can't get the same answer as example


Hello,
Here is how you enter it.
[+/-]0.693/8x4[2ndF][e^x][=] result is 0.7071588193 or as you wrote 0.7071
some calculators show an error message if you enter the [+/-] (the negative of a number before the number itself).
In that case enter 0.693 then press [+/-]. the calculator should put a small - sign before the 0.
You can try
0.693[+/-][x]4[/]8[2ndF][e^x][=]

Hope it clarifies things.

Sep 16, 2008 | Sharp EL-531VB Calculator

1 Answer

Difficulty changing to the Statistics mode


Download the small instruction book from TI web site, keystrokes and examples at pages 10/11

http://education.ti.com/educationportal/downloadcenter/SoftwareList.do?website=US&tabId=2&paneId=18

Mar 22, 2008 | Texas Instruments TI-30XA Calculator

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