Question about Texas Instruments TI-34II Explorer Plus Calculator

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I can not figure out how to do standard deviation.

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1 Answer

What is deviation standard


The standard deviation is a measure of how "tight" the samples are distributed around your mean.
In layman's terms, a small standard deviation indicates that most of your measurements are in the vicinity of the means; a large standard deviation corresponds to readings that are all over the place.
You could also say that the smaller the SD, the more your mean is representative of the data set.
For a better explanation, just look up Standard deviation on Wikipedia!

May 03, 2014 | Audio Players & Recorders

1 Answer

Does this calculator comes with a standard deviation or population standard deviation button


Yes. The sample standard deviation is 2nd [sigma x n-1] and the population standard deviation is 2nd [sigma x n].

Apr 02, 2010 | Texas Instruments TI-30XA Calculator

1 Answer

Finding standard deviation of samples!!


34 σ+
39 σ+
32 σ+
36 σ+
30 σ+
33 σ+
2nd ÷ (σxn)

Jun 02, 2009 | Texas Instruments TI-30XA Calculator

1 Answer

Standard Deviation


Press 2ND [CSR] to clear the stat data.

For each data point, enter the number followed by SIGMA+

If you have grouped data, enter the number followed by 2ND [FRQ] followed by the frequency then SIGMA+

Press 2ND [sigma x n] for the population standard deviation or 2ND [sigma x n-1] for the sample standard deviation.

May 25, 2009 | Texas Instruments TI-30X-IISTK Scientific...

1 Answer

Mean and standard deviation


Mode - 2 - STAT - 1(VAR) Then put your data: 25,34,13

Then press AC which is the clear button and then SHIFT - 1(STAT) - 5(VAR) 2 (X) =

Voila!

Jun 08, 2008 | Casio fx-300ES Calculator

2 Answers

Standard Deviation


I want to calculate a standard deviation on BA II plus

Apr 23, 2008 | Texas Instruments BA-II Plus Calculator

1 Answer

Standard Deviation


Hello,
You must first enter the data you are doing statistics on.

ffb68b8.jpg

After you finish entering the data, do as the figure below describes.
c6b761d.jpg

Hope it helps.

Mar 11, 2008 | Sharp EL-531VB Calculator

1 Answer

Maths & statistic


Standard deviation is the average root mean squared deviation from the average of the numbers.

Familiarize yourself with the wikipedia page on standard deviation: http://en.wikipedia.org/wiki/Standard_deviation

In this case, your question is easy. The standard deviation is 0, so this means the boys ages are all the same.

So they're all 24/3 = 8 years old.

Proof:
8 + 8 + 8 = 24 <-- satisfies the constraint that the boys ages must total to 24.

Get the standard deviation of these numbers;

8+8+8 / 3 = 8 <-- the average value is 8

The deviation of each boy's age from the average is:
boy 1
--------
8 years old, which deviates from 8 by 0
boy 2
--------
8 years old, which deviates from 8 by 0
boy 3
--------
8 years old, which deviates from 8 by 0

So the deviations are 0, 0 and 0.

To get the standard deviation, you sum the squares of the deviations of each boy, get the average, and square root. So:

0² + 0² + 0² = 0
Average is 0 / 3 = 0
Square root of 0 = 0

So the standard deviation is 0. Which shouldn't be much of a surprise to you. We just had to actually DO the work to show that it was in fact 0.

Feb 08, 2008 | Audio Players & Recorders

2 Answers

Standard deviation


image001.gif Enter the first number, 1.
image001.gif Hit the σ+ (Sigma+) key. ( n=1 will appear in the window)
image001.gif Enter the second number, 1.
image001.gif Hit the σ+ (Sigma+) key. (n=2 will appear in the window)
image001.gif . . . . .
image001.gif Enter the last number, 7.
image001.gif Hit the σ+ (Sigma+) key. (n=7 will appear in the window)
image001.gif Hit 2nd x2 (by hitting the 2nd key you are actually selecting the x-bar written above the key.) This gives you the mean.
image001.gif Hit 2nd sqrt(x). This gives you the sample standard deviation which we will use in class.
image001.gif Make sure you turn your calculator off and on for new data sets.

Jan 24, 2008 | Texas Instruments TI-30XA Calculator

2 Answers

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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