Question about Casio Fx-992s Scientific Calculator
Computing sandard deviation
Posted by Anonymous on
SOURCE: 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
7.Press 2 to calculate the mean
Posted on Sep 19, 2009
SOURCE: Standard Deviation
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](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.
Posted on Oct 17, 2009
I assume you know the theory. I will show you the key strokes for
1-Var statistics and 2-Var statistics
Press [MODE][3:STAT] [1:1-VAR]. You are ready to enter values in the X column.
Enter a number and press [=]. Cursor jumps to second number to enter.
Keep entering numbers and pressing [=] till all numbers are in. Press the [=] key after the last one.
Press [AC] key to clear the screen.
Press [SHIFT] [STAT] (above digit 1.) then [5:Var]. Screen displays the statistical variables 1:n ;2: x bar; 3: x sigma n; 4:x sigma n-1.
Press the number corresponding to Referable you want, ex 1:n . The variable appears on screen. Press [=] and it will be displayed.
To display another variable press [SHIFT][STAT][5:Var][ 1,2, 3, or 4] .
- To access the sum of squares sigma x^2 and the sum of data sigma x press[SHIFT][STAT][4:SUM] then [1: for sigma x^2] or [2: for sigma x]. Press [SHIFT][STAT][6:MinMax] to access minX and maxX.
To perform 2 variable statistics you press [MODE][3:STAT] and any of the other regression options (except 1:1-Var). A two column template opens where you enter the X and Y values. When finished entering data, press [SHIFT][STAT][5:Var]. to access the different statistics. As I assumed above, you should be able to recognize what each variable means.
Posted on May 21, 2010
Press [SHIFT]  (sigma n-1) to get sample standard deviation
Press [SHIFT] (sigma n] for the population standard deviation
Press [SHIFT]  (xbar) for the mean
Press [SHIFT]  (n) for the number of data entries
Press [SHIFT]  (capital sigma x) for the sum of values
Press [SHIFT]  (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
Posted on Jun 22, 2010
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