Question about Texas Instruments TI-30XA Calculator

Standard deviation how do you do standard deviation and mean on this calculator

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• Anonymous Mar 17, 2014

What is the standard deviation of the set 2, 5, 12, 20, 7, 5, 3, 4

• Anonymous Mar 20, 2014

standard deviation of 4221.8

• Anonymous Mar 23, 2014

12,8,10,12,15,11,8,9,7,6,4,2,5,12,9,3

• Anonymous Mar 24, 2014

10.8,10.5,10.9,11.0,11.5,11.2,11.0,10.9,11.5,10.8,10.3,10.9,10.7,10.8,11.1,10.7,11.1,11.7,11.5,11.5

• Anonymous Mar 26, 2014

3 writers, 120 pages for print, lot of spelling mistakes, turn-time is 24 hours

• Anonymous Mar 27, 2014

trying to manually calculate the standard deviation and the mean of the data set is a repeating decinal

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Enter the first number, 1.
Hit the σ+ (Sigma+) key. ( n=1 will appear in the window)
Enter the second number, 1.
standard deviation - image001.giftp://i.fixya.net/uploads/images/image001.gif" alt="image001.gif" class="h_mi" /> Hit the σ+ (Sigma+) key. (n=2 will appear in the windowstandard deviation - image001.gifan>
. . . . .
Enter the last number, 7.
Hit the &sigstandard deviation - image001.gif) key. (n=7 will appear in the window)
Hit 2nd x2 (by hitting the 2nd key ystandard deviation - image001.giflly selecting the x-bar written above the key.) This gives you the mean.
sqrt(x). This gives you the sample standard deviation which we will use in class.
Make sure you turn your calculator off and on for new data sets.

Posted on Jan 26, 2008

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Thanks Shugga T. I was wratching my brain and could not figure how to do it on the calculator. I was starting to think I was going to have to do it by hand. You just saved me a lot of time. Thank you, thank you, thank you.

Posted on Jan 26, 2008

Hi there,
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Posted on Jan 02, 2017

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Related Questions:

How can I find the mean absolute deviation?

Mean absolute deviation.
Let's break it down into its components.
Mean - Average
Absolute - absolute value - sign doesn't matter - if negative, make positive
Deviation - difference from the mean

Let's do an example. Population 3 7 4 2. Total 16. Mean (Average) 16/4 = 4.

Deviations
3 - 4 = -1 absolute value 1
7 - 4 = 3
4 - 4 = 0
2 - 4 = -2 absolute value 2

Sum of these deviations 1 + 3 + 0 + 2 = 6
Mean (average) of these deviations is 6 / 4 = 1.5.

Good luck,

Paul

Apr 05, 2016 | Texas Instruments TI-30Xa Scientific...

How to calculate mean

The mean is (1+5+9)/3 = 5.
The squared deviations are (1-5)^2=16, (5-5)^2=0, and (9-5)^2=16.
The sum of the squared deviations are 16+16 = 32.
Divided by one less than the number of data points, 32/(3-1) = 16.
The square root of 16 is 4. This is the sample standard deviation.

Apr 25, 2014 | Office Equipment & Supplies

Where is s on the ti-30xa calculator

If you mean the standard deviation, there are two shifted keys on the third row marked with a lower-case Greek sigma. sigma_xn is the population standard deviation and sigma_xn-1 is the sample standard deviation.

Nov 12, 2013 | Texas Instruments TI-30XA Calculator

I have 50 data points for which i need to find standard deviation on a classpad 330 , is there any quicker way to calculate than minusing the mean from every data point?

Here is one technique I used on the TI84Plus.
Create two lists list1(50) and list2(50) of equal dimension (same length)
You will have to find how to do it on ClassPad.
Fill list2 with zeros
Sort the list in ascending order (if it is not sorted)
Do standard deviation calculation on list1 (or calculate the average)
The mean of the data is in a special variable (xbar)
From the command line using the list syntax calculate abs(list1-xbar) and store results in list2, overwiting the zeros.
Perform standard deviation on the new list2. You will get the mean deviation from the mean in the variable xbar.

A simple request from you. Can you please not use MINUS as a verb? By doing so you are propagating incorrect usage. There is a short and correct way to express the operation: to add.

May 05, 2012 | Casio ClassPad 300 Calculator

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

If both tests are graed on a curve, who did better and why?

Jill. She scored two standard deviations above the mean, while he only scored one-and-a-half standard deviations above the mean.

Sep 11, 2009 | Texas Instruments TI-86 Calculator

Standard deviation

standard deviation

calculate mean of a data set:

1. Turn calc. on or press MODE SeTUP
2.Press 3 for STAT
3. Press 1 for VAR
4.Enter values for X column
5. WHen done entering press SHIFT 1
6.Press 5
7.Press 2 to calculate the mean
8.Press =

Oct 05, 2008 | Casio FX-115ES Scientific Calculator

Standard Deviation

Texas Instruments TI-86 Statistics How-To Information The following instructions should allow you to calculate the mean and standard deviation using a TI-86 calculator.
1. Press STAT
2. Select EDIT
3. Enter data into a list: [2.32 ENTER 2.43 ENTER 2.39 ENTER, etc.] Continue until all data have been entered. (use arrows keys to go to the y value, if any)
4. EXIT until you reach the main ("blank") screen. (If you try to calculate while you're in the data menu, it thinks you're still trying to enter data!)
5. Press STAT
6. Select CALC
7. Select OneVa
8. Select LIST, NAMES, xStat(F2), Press ENTER
9. The calculator provides Max, Min, Mean, Standard Deviation, Sum, Sigma, etc. You will be primarily interested in the Mean and Standard Deviation (sx).

Nov 15, 2007 | Texas Instruments TI-86 Calculator

Standard Deviations

This calc will do standard deviations. In the manual it is on page 2 and also on page 40.

Sep 07, 2006 | Casio FX-7400G Plus Calculator

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