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.
Clearing the memory
Press Row 1, Column 1 Row 5, Column 5 (scl, for statistics clear).

 

Entering data
one variable
To get into the STAT mode, press Row 1, Column 6 .  You should see the letters SD at the top of the screen.  If the letters SD are already there, then you can skip this first step; you're ready to go.  Type in first number.  Press Row 4, Column 3.  Type in second number.  Press Row 4, Column 3.  The screen will tell you how many values you have entered so far. Continue until all the data has been entered.
two variables
To get into the STAT mode, press Row 1, Column 6 .  You should see the letters LR at the top of the screen (for linear regression).  If the letters LR are already there, then you can skip this first step.  Type in first x-value.  Press Row 1, Column 1 Row 4, Column 3.  Type in the first y-value, then press Row 4, Column 3.  And so on until all the data has been entered.

 

Calculating one-variable statistics
mean (x)
Press Row 1, Column 1 Row 7, Column 1.  You should see  x  above the key.
standard deviation for populations (s or sn)
Press Row 1, Column 1 .  You should see xsn above the key. 
standard deviation for samples (s or sn-1)
Press Row 1, Column 1 .  You should see  xsn-1 above the key. 

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


Calculating combinations and permutations
combinations (nCr)
Enter the n value.  Press Row 1, Column 1 row 1, column 5 (you should see nCr above the key).  Enter the r value, then press .
permutations (nPr)
Enter the n value.  Press Row 1, Column 1 row 1, column 4 (you should see nPr above the key).  Enter the r value, then press .

 

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  Row 1, Column 6 Row 1, Column 1 Row 5, Column 5 (scl)
2: Enter the data  Row 7, Column 1 Row 4, Column 3 (DT) Row 7, Column 1 Row 4, Column 3 Row 4, Column 3  Row 7, Column 1 Row 4, Column 3
3: Compute the mean  Row 1, Column 1 Row 7, Column 1 (X)
4: Compute the population standard deviation.  Row 1, Column 1 (xsn) 
5: Compute the sample standard deviation:  Row 1, Column 1 (xsn-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  Row 1, Column 6 Row 1, Column 1 Row 5, Column 5 (scl)
2: Enter Data  Row 7, Column 1 Row 1, Column 1 Row 4, Column 3 Row 4, Column 3 (DT)  Row 1, Column 1 Row 4, Column 3  Row 4, Column 3 Row 1, Column 1 Row 4, Column 3 Row 4, Column 3 Row 1, Column 1 Row 4, Column 3 Row 4, Column 3
3: Compute the slope of the regression line  Row 1, Column 1 (a) 
4: Compute the y-intercept of the regression line.  Row 1, Column 1 (b) 
5: Compute the correlation.  Row 1, Column 1 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  Row 7, Column 1 Row 1, Column 1 row 1, column 5 (nCr) 
2: Compute 9P5   Row 1, Column 1 row 1, column 4 (nPr) 


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

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