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 4 (you should see SCL, for Stat CLear, over the key).

 

Entering data
one variable
Press  2nd from the right, top row of keys (to get into one-variable statistics mode).  Enter the first number.  Press row 4, column 6.  Enter the 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 Third key, 2nd row from the bottom   (to get into two-variable mode).  Clear memory.  Type in the first x-value, then  Row 4, Column 3 (you should see (xD,yD) below the key), 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
mean (x)
Press Top Row leftmost key Row 7, Column 1 (you should see x above the key).
standard deviation for populations (s or sn)
Press Top Row leftmost key Row 7, Column 2 (you should see x sn above the key).
standard deviation for samples (s or sn-1)
Press Top Row leftmost key Row 7, Column 3 (you should see x sn-1 above the key).

Calculating two-variable statistics
r (correlation)
Press Top Row leftmost key Row 5, Column 3 (you should see r above the key).
regression coefficients
slope
Press Top Row leftmost key row 5, column 2 (you should see B above the key).
y-intercept
Press Top Row leftmost key row 5, column 1 (you should see A above the key).


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 Row 8, Column 5 or 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 will list the keys by the main symbol on the key.  In parentheses, we will list a helpful mnemonic, e.g. we will list ex as (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 4 (scl)
2: Enter the data:  2nd row from the bottom, far left row 4, column 6  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)  
4: Compute the standard deviation (population):  Top Row leftmost key (x sn)  
5: Compute the standard deviation (sample):  Top Row leftmost key Third key, 2nd row from the bottom (x sn-1) 


    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 4 (scl)
2: Enter Data  2nd row from the bottom, far left Row 4, Column 3 row 4, column 6 (DT) Row 4, Column 3 row 4, column 6 Third key, 2nd row from the bottom Row 4, Column 3 row 4, column 6 Row 4, Column 3 row 5, column 1 row 4, column 6 
3: Compute the slope of the regression line  Top Row leftmost key row 5, column 2 (B)
4: Compute the y-intercept of the regression line  Top Row leftmost key row 5, column 1 (A)
5: Compute the correlation  Top Row leftmost key Row 5, 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 ) Row 6, Column 3 Bottom Right
2: Compute 9P5  Row 5, Column 3 Top Row leftmost key Row 6, Column 4 (nPr ) Row 6, Column 2 Bottom Right


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

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