Question about Casio CFX-9850G Plus Calculator

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Standard deviation I need to calculate the mean and standard deviation of the following numbers on my Casio CFX9850GC: 62, 55, 34, 52, 44, 49 I entered the numbers in list 1 of STAT. Secondly I tried ''DIST'', ''NORM'' and ''Ncd" Lower: 34 Upper: 62 Sigma: ? u (MU): ? Can someone help me solve this?

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Pulse F1(CALC), F1(1VAR) and it goes to 1-Variable Screen and shows the following:
x-(mean): 49.3333333
Sumx:296
Sumx^2:15066
xon:8.78761755
xon-1:9.62635271
n:6

I guess that you wanted the x- and xon

Also are available in RUN mode through VARS, F3(STAT), F1(X), F2(x-) and F5(xon)

Posted on Jul 11, 2009

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How can i do standard deviation on my calculator


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image001.gif Hit the M+. (n= 1 will appear in the window)
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image001.gif Hit the M+ key. (n=2 will appear in the window)
image001.gif . . . . .
image001.gif Enter the last number, 7.
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  3. Data input always starts with [SHIFT][SAC], to clear the registers of old data.
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  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
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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

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  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.
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