Question about Sharp EL-500LB Calculator

Re: How do I work out the standard deviation, every time...

The following table shows the total prize money recieved in 2007 to date for each of 31 seeded male players at this year's wimbledon. The amounts shown are to the nearest u$100,000

27 33 7 16 9 8 7 3 4 6

4 6 7 7 4 5 3 4 4 2

7 3 6 5 2 3 4 3 3 2

Question?

Calculate the five figure summary of the total prize money recieved?

Posted on Aug 02, 2008

Re: How do I work out the standard deviation, every time...

27 33 7 16 9 8 7 3 4 6

4 6 7 7 4 5 3 4 4 2

7 3 6 5 2 3 4 3 3 2

Question?

Calculate the five figure summary of the total prize money recieved?

Posted on Aug 02, 2008

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

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...

This is to be expected. A standard deviation of 0 means that all the data points are identical. Asking for the point below which .025 of the data lie is meaningless.

May 25, 2012 | Texas Instruments TI-89 Calculator

Hi there,

My name is adieh. Hav a great day.

Here are the tips on how to calculate standard deviation using a graphic calculator:

1. Turn on your graphing calculator, go to the stats/editor screen and enter your data set into list1. Once this is done, return to your home page by hitting the home button.

2. Push the catalog button and scroll through the applications until you find "stdDev(". Place the arrow next to it and press enter.

3.Type the word "list1" into the open parenthesis. After you have put that in, close the parenthesis so you calculator doesn't show an error message.

4. Press the enter button. The calculator has done the calculations and you now have the standard deviation of your data set.

Note:

Using 1-var stats in the stats/editor screen will also give you the standard deviation. Using that function will also give you other information associated with your data set.

Hope it helps.

Thank you for using fixya.

Sep 23, 2011 | Texas Instruments TI-84 Plus Silver...

The normalcdf function takes three arguments: the z value, the mean, and the standard deviation. In the "standard" case the mean is 0 and the standard deviation is 1. Thus, try calculating

normalcdf(-.1923, 0, 1) .

normalcdf(-.1923, 0, 1) .

Jun 29, 2011 | Texas Instruments TI-84 Plus Silver...

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,

I am afraid I do not understand. The frequency of a PARTICULAR score is the number of times that particular value occurs in the data. It is not the number of data.

Ex: the data are:

4, 6, 5, 4, 4, 8, 9, 3, 3, 6, 7

Frequency of (3) =2

Frequency of (4)= 3

Frequency of (5) =1

Frequency of (6)= 2

Frequency of (7)=1

Frequency of (8)=1

Frequency of (9)=1

Number of data =11 (n=11)

You compute the mean M

M= (2x3 + 3x4 +1x5 +2x6+1x7+1x8+1x9) /11 =5.363636..

As you can see, if a term is not repeated it is multiplied by 1 (its frequency is one). Value 3 occurs twice (hence 2x3); value 4 occurs 3 times (3x4), etc.

To calculate by hand the sum of squares

**3:** (3-5.3636)^2 + (3-5.3636)^2 .................... = **2x(3-5.3636)^2**

**4:** (4-5.3636)^2 + (4-5.3636)^2 +(4-5.3636)^2 = **3x(4-5.3636)^2**

**5:** (5-5.3636)^2 ...................................... .= **1x(5-5.3636)^2**

**6:** (6-5.3636)^2 +(6-5.3636)^2......................= **2x(6-5.3636)^2**

**7**: (7-5.3636)^2.......................................... .=**1x(7-5.3636)^2**

**8**: (8-5.3636)^2......................................... ..=**1x(8-5.3636)^2**

9: (9-5.3636)^2......................................... ..=**1x(9-5.3636)^2**

If I have not made a mistake the sum of squares is 40.5454

**Standard Deviation**

The standard formula above gives s= square root (40.5454/10) =2.01

** Population Standard Deviation**

The population Standard deviation above is S= square root (40.5454/11) =1.9198

So if you perform the calculation with the calculator the only times you need to enter the frequency is for repeated terms. When you have to enter 6 above, its frequency is 2 you proceed as follows

**6 [2nd][FRQ] 2 [Sigma+]**

Once you entered the raw scores, the calculator does the rest.

Hope it helps.

I am afraid I do not understand. The frequency of a PARTICULAR score is the number of times that particular value occurs in the data. It is not the number of data.

Ex: the data are:

4, 6, 5, 4, 4, 8, 9, 3, 3, 6, 7

Frequency of (3) =2

Frequency of (4)= 3

Frequency of (5) =1

Frequency of (6)= 2

Frequency of (7)=1

Frequency of (8)=1

Frequency of (9)=1

Number of data =11 (n=11)

You compute the mean M

M= (2x3 + 3x4 +1x5 +2x6+1x7+1x8+1x9) /11 =5.363636..

As you can see, if a term is not repeated it is multiplied by 1 (its frequency is one). Value 3 occurs twice (hence 2x3); value 4 occurs 3 times (3x4), etc.

To calculate by hand the sum of squares

9

If I have not made a mistake the sum of squares is 40.5454

The standard formula above gives s= square root (40.5454/10) =2.01

The population Standard deviation above is S= square root (40.5454/11) =1.9198

So if you perform the calculation with the calculator the only times you need to enter the frequency is for repeated terms. When you have to enter 6 above, its frequency is 2 you proceed as follows

Once you entered the raw scores, the calculator does the rest.

Hope it helps.

Nov 06, 2009 | Texas Instruments TI-30XA Calculator

Press the 2nd Button then the ZOOM button. Make sure that AxesOn is highlighted. If not, move your cursor down until you on AxesOn and press ENTER.

If AxesOn is highlighted, then it is probably your window. Press ZOOM, then 6.

If AxesOn is highlighted, then it is probably your window. Press ZOOM, then 6.

Jun 03, 2009 | Texas Instruments TI-84 Plus Calculator

I want to calculate a standard deviation on BA II plus

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

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

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

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

632 people viewed this question

Usually answered in minutes!

×