Question about Casio CFX-9850G Plus Calculator

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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.

Posted on Sep 06, 2010

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Posted on Jan 02, 2017

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Calculate the population standard deviation and then square it.

Statistical calculations begin on page E-22 of the manual.

Statistical calculations begin on page E-22 of the manual.

Mar 15, 2012 | Casio FX570ES Scientific Calculator

get the TI 84 for dummies book, and check the statistic functions - they are fantastic - got me an A in statistics - once you start using them, you must practice- a function for everything!!

Jan 29, 2011 | Texas Instruments TI-83 Plus Calculator

Hello,

I am happy that you found my solution helpful and even flattered that you copied it in this thread. By doing this, you gave me the opportunity to discover an error in my post. In fact, the calculator does provide a column for the frequency. If you enter nothing in the frequency column, all data items will have their frequency set to 1, by default.

Back to the current subject: How to get the variance (the square of the standard deviation).

When you finish entering your data:

While the symbol xSigma_n or xSigma_n-1 is still displayed with the blinking cursor to its right, press the [x^2] key above the [HYP] key. The screen displays say xSigma_n ^2. Press [=] to calculate the variance.

As my motto says, I am always happy to help, but happier still when people show true appreciation.

Hope it helps.

I am happy that you found my solution helpful and even flattered that you copied it in this thread. By doing this, you gave me the opportunity to discover an error in my post. In fact, the calculator does provide a column for the frequency. If you enter nothing in the frequency column, all data items will have their frequency set to 1, by default.

Back to the current subject: How to get the variance (the square of the standard deviation).

When you finish entering your data:

- Press the [AC] button to exit the data editor.
- Press [****][STAT].
- Press [5:Var] to open the statistical result selection screen.
- Press [3: xSigma_n] or [4:xSigma_n -1] depending on what you are interested in (population or sample) standard deviation.
- The screen echoes the symbol for the value selected (the value displayed on the bottom line may be 0 or an old value from a previous calculation: it is not the value you have just calculated).
- Press [=] to display the current value of the SD chosen.
- By doing this you are in fact storing it it answer memory.
- All you have to do now is to raise it to power 2 by pressing the [x^2] key ( the one above the [HYP] key).
- The calculator will display Ans^2.
- Press [=] to display the value of the variance.

While the symbol xSigma_n or xSigma_n-1 is still displayed with the blinking cursor to its right, press the [x^2] key above the [HYP] key. The screen displays say xSigma_n ^2. Press [=] to calculate the variance.

As my motto says, I am always happy to help, but happier still when people show true appreciation.

Hope it helps.

Dec 11, 2009 | Casio fx-300ES Calculator

Hello,

Set the [Mode] to [3:STAT]. You are offered the choices

1:1-Var

2:A+BX

3:__+cX^2

etc.

I**f you want to do 1-Var statistics**, you press 1:1-Var. A column template opens where you put the X values. If a value is repeated you enter it several times. (there is no frequency column.)

When you enter all data you press [SHIFT][STAT]

You have several choices among them

4: SUM to get SigmaX^2 and Sigma X

5: VAR to get n, the mean X bar, the sample and population standard deviations

6:MINIMAX to get MinX and MaxX

7: Distr the Distributions.

I**f you want to perform 2-Var statistics**

You press [MODE][STAT] and select one of the Regression models

2:A+BX

3:__+cX^2

etc.

The selection of any of the 7 regression models, opens a two-column template where you enter the X and Y values

When finished press [SHIFT][STAT]

The choices offered are

The variance is the SQUARE of the Standard Deviation.

Hope it helps.

Set the [Mode] to [3:STAT]. You are offered the choices

1:1-Var

2:A+BX

3:__+cX^2

etc.

I

When you enter all data you press [SHIFT][STAT]

You have several choices among them

4: SUM to get SigmaX^2 and Sigma X

5: VAR to get n, the mean X bar, the sample and population standard deviations

6:MINIMAX to get MinX and MaxX

7: Distr the Distributions.

I

You press [MODE][STAT] and select one of the Regression models

2:A+BX

3:__+cX^2

etc.

The selection of any of the 7 regression models, opens a two-column template where you enter the X and Y values

When finished press [SHIFT][STAT]

The choices offered are

- T
**yp**e takes you back to select type of statistics to perform **Data**To edit the data in the columns**Edit**To insert or delete a value**SUM**To access the calculated values of SigX^2,SigX,SigY^2,SigY,SigXY,SigX^3, SigX^2Y, SigX^4**Va**r : To access the calculated values n, Xbar, Sample STD for x, S STD for Y, Pop STD for X, and Pop STD for Y**MinMax**: MinX, MinY, MaxX, MaxY**Reg**: Gives you the regression coefficients for the particular regression model you want to test.

The variance is the SQUARE of the Standard Deviation.

Hope it helps.

Nov 06, 2009 | Casio fx-300ES Calculator

Hello,

Of course there are formulas for those calculations.**You find them in books on statistics.** Do not worry, the calculator has been programmed to use them. All you have to do is learn how to get the calculator to give you the results.

If you still want to see the formulas with your very eyes, I suggest you go to the local library, ask a math teacher, an accountant, or launch a Google search for them.

Hope it helps.

Of course there are formulas for those calculations.

If you still want to see the formulas with your very eyes, I suggest you go to the local library, ask a math teacher, an accountant, or launch a Google search for them.

Hope it helps.

Aug 05, 2009 | Casio fx-300ES Calculator

http://www.geocities.com/calculatorhelp/casiofx300ms.htm

Mar 11, 2009 | Casio FX-300MS Calculator

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 =

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

I want to calculate a standard deviation on BA II plus

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

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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