Before any statistical calculations, you must press 2nd from the right, top row of keys 2nd from the right, top row of keys 2nd row ffrom the bottom, far left for one-variable statistics mode or  2nd from the right, top row of keys 2nd from the right, top row of keys for two-variable (linear regression) mode.

The position of the graphically represented keys can be found by moving your mouse on top of the graphic.

Turn your calculator on

Press row 5, column 5. (You should see the word ON to the right of the key.)

Clearing the memory

Press top left (gray key) row 5, column 5 (you should see SCL, for Stat CLear, over the key) Bottom Right.

Entering data

     one variable

Press  2nd from the right, top row of keys 2nd from the right, top row of keys 2nd row ffrom the bottom, far left (to get into one-variable statistics mode).  Type in first number.  Press row 4, column 6 (you should see DT below the key, in blue).  Type in second number.  Press row 4, column 6.  Continue until all the data has been entered.

     two variables

Press  2nd from the right, top row of keys 2nd from the right, top row of keys 2nd row ffrom the bottom, far left  (to get into two-variable mode).   Clear memory.  Type in the first x-value, then  Row 4 - Column 5, then the corresponding y-value.  Press row 4, column 6.  Continue in this manner until all the data has been entered.

Calculating one-variable statistics

To get into one-variable statistics mode, press  2nd from the right, top row of keys 2nd from the right, top row of keys 2nd row ffrom the bottom, far left.

     mean

Press Top Row leftmost key 2nd row ffrom the bottom, far left (x)  Bottom Right.

     standard deviation for populations (s or sn)

Press Top Row leftmost key (x sn)  Bottom Right.

     standard deviation for samples (s or sn-1)

Press Top Row leftmost key Third key, 2nd row from the bottom (x sn-1 )  Bottom Right.

Calculating two-variable statistics

Press  2nd from the right, top row of keys 2nd from the right, top row of keys 2nd row ffrom the bottom, far left to get into two-variable (linear regression mode).  Then enter the data and follow the directions below.

     r (correlation)

Press Top Row leftmost key Row 4 - Column 3 (you should see r above the key), then Bottom Right.

     regression coefficients

    slope

Press Top Row leftmost key row 5, column 1 (you should see A above the key), then Bottom Right.

    y-intercept

Press Top Row leftmost key row 5, column 2 (you should see B above the key), then Bottom Right.

Calculating combinations and permutations

    combinations (nCr)

Enter the n value.  Press Top Row leftmost key Row 6, Column 5 (you should see nCr above the key).  Enter the r value, then Bottom Right.

    permutations (nPr)

Enter the n value.  Press Top Row leftmost key Row 6, Column 4 (you should see nPr above the key).  Enter the r value, then Bottom Right.

Turning the calculator off

This is a solar calculator.  You can't turn it off.  EVER!  (Okay, it shuts down after two minutes of non-use).

 

Worked Out Examples

In the following examples, we list the exact key sequence used to find the answer.  We list the keys by the main symbol on the key.  In parentheses we include a helpful mnemonic, e.g. (ex).


A: What is the mean and standard deviation of the following list of numbers?

15      16      20      21

1: Clear Memory  2nd from the right, top row of keys Top Row leftmost key row 5, column 5 (scl) Bottom Right
2: Enter the data:  2nd row from the bottom, far left row 4, column 6 (DT) 2nd row ffrom the bottom, far left row 4, column 6 row 4, column 6  
  2nd row ffrom the bottom, far left row 4, column 6
3: Compute the mean  Top Row leftmost key 2nd row ffrom the bottom, far left (x)  Bottom Right
4: Compute the standard deviation (population):  Top Row leftmost key (x sn) Bottom Right
5: Compute the standard deviation (sample):  Top Row leftmost key Third key, 2nd row from the bottom (x sn-1) Bottom Right


    You should get a mean of 18, population standard deviation of 2.549509757, and a sample standard deviation of 2.943920289.

B: Find the linear regression line for the following table of numbers. Also find the correlation.

x 1 2 3 4
y 2 4 5 7

1: Clear Memory  2nd from the right, top row of keys Third key, 2nd row from the bottom Top Row leftmost key row 5, column 5 (scl) Bottom Right
2: Enter Data  2nd row from the bottom, far left Row 4 - Column 5 row 4, column 6 (DT) Row 4 - Column 5 row 4, column 6 Third key, 2nd row from the bottom  
 Row 4 - Column 5 row 4, column 6 Row 4 - Column 5 row 5, column 1 row 4, column 6 
3: Compute the slope of the regression line  Top Row leftmost key row 5, column 1 (a)
4: Compute the y-intercept of the regression line  Top Row leftmost key row 5, column 2 (b)
5: Compute the correlation  Top Row leftmost key Row 4 - Column 3  (r)


    You should get a slope of 1.6, a y-intercept of 0.5, and a correlation of 0.992277876.
    The regression line would be: y = 1.6x+0.5.

C: Find 10C6 and 9P5.
1: Compute 10C6  2nd row from the bottom, far left Top Row leftmost key Row 6, Column 5 (nCr ) Bottom Right
2: Compute 9P5   Top Row leftmost key Row 6, Column 4 (nPr ) Bottom Right


You should get 10C6 = 210 and 9P5= 15120.

For more information, consult a manual.

Click here for the sample problem set.

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