0helpful

1answer

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...

0helpful

1answer

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.

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

0helpful

1answer

Use the STAT Editor. Refer to the "Statistical Calculation" section beginning on page E-44 of the manual. If you need a manual, you may download one here.

Sep 28, 2011 •
Casio FX-115ES Scientific Calculator

1helpful

1answer

Here are the capabilities of the Casio calculators.

The screen captures may not look like ones taken from the FX-7400G

plus display but the instructions are accurate.

In stat enter the values in List1 and the frequencies in List2**(if doing paired variable statistics)**

Press the key corresponding to the CALC tab

Press the 1-var tab and you get the results as seen on the screen with title 1-variable.

Other screens show some two-variable stats or regressions.

Use you knowledge of sample standard deviations and

population standard deviation to select which is relevant to your case.

They are given by xsigma-n and xSigma n-1

The screen captures may not look like ones taken from the FX-7400G

plus display but the instructions are accurate.

In stat enter the values in List1 and the frequencies in List2

Press the key corresponding to the CALC tab

Press the 1-var tab and you get the results as seen on the screen with title 1-variable.

Other screens show some two-variable stats or regressions.

Use you knowledge of sample standard deviations and

population standard deviation to select which is relevant to your case.

They are given by xsigma-n and xSigma n-1

Aug 15, 2011 •
Casio FX-7400G Plus Calculator

1helpful

1answer

There isn't one. Press the "STAT VAR" button to bring up the statistics menu. "Sx" and "Sy" will give you the sample standard deviations, while "sigma x" and "sigma y" will give you the population standard deviations.

When I say "sigma" I mean the lower case Greek letter sigma, which looks like a lower-case "o" with a tail pointing to the right.

When I say "sigma" I mean the lower case Greek letter sigma, which looks like a lower-case "o" with a tail pointing to the right.

May 19, 2011 •
Texas Instruments TI-30 XIIS Calculator

0helpful

1answer

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

1helpful

2answers

Hello,

If you want to do statistics with this calculator you press [MODE][3:STAT]. You have then 8 options 1:1-var, 2:A+BX, etc.

For one variable statistics you press 1. Enter the values for the X variable in the template. Once finished you press [SHIFT][1](STAT) then select the value you want ( n, x bar , and the standard deviations (X sigma n) and (X sigma n-1).

Hope it helps.

If you want to do statistics with this calculator you press [MODE][3:STAT]. You have then 8 options 1:1-var, 2:A+BX, etc.

For one variable statistics you press 1. Enter the values for the X variable in the template. Once finished you press [SHIFT][1](STAT) then select the value you want ( n, x bar , and the standard deviations (X sigma n) and (X sigma n-1).

Hope it helps.

Jul 30, 2009 •
Casio fx-300ES Calculator

4helpful

2answers

Enter the first number, 1.

Hit the σ+ (Sigma+) key. ( n=1 will appear in the window)

Enter the second number, 1.

Hit the σ+ (Sigma+) key. (n=2 will appear in the window)

. . . . .

Enter the last number, 7.

Hit the σ+ (Sigma+) key. (n=7 will appear in the window)

Hit 2nd x2 (by hitting the 2nd key you are actually selecting the x-bar written above the key.) This gives you the mean.

Hit 2nd 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.

Hit the σ+ (Sigma+) key. ( n=1 will appear in the window)

Enter the second number, 1.

Hit the σ+ (Sigma+) key. (n=2 will appear in the window)

. . . . .

Enter the last number, 7.

Hit the σ+ (Sigma+) key. (n=7 will appear in the window)

Hit 2nd x2 (by hitting the 2nd key you are actually selecting the x-bar written above the key.) This gives you the mean.

Hit 2nd 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.

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

1helpful

1answer

1. Put the data into a list.

2. OneVar list will produce a screenful (and more) of one-variable statistics.

OneVar is available through the STAT CALC menu. "list" in step 2 is the name of the list created in step 1.

2. OneVar list will produce a screenful (and more) of one-variable statistics.

OneVar is available through the STAT CALC menu. "list" in step 2 is the name of the list created in step 1.

Oct 25, 2007 •
Texas Instruments TI-86 Calculator

0helpful

1answer

If you're sure the answer isn't really 1.007, check to see if the calculator is in fixed mode. You can change it to scientific notation(that'll give you lots of digits past the decimal place, or I prefer engineering, which is scientific except all powers of ten are in multiples of three).

Sep 20, 2007 •
Texas Instruments TI-86 Calculator

1,730 views

Usually answered in minutes!

what is the standard deviation for the set of numbers; 2.44,2.50,2.53,2.76,2.84,2.90,2.93,2.93,3.72,4.20,4.80

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