The position of the graphically represented keys can be found by moving your mouse on top of the graphic. The function keys do not count as a row.
Turn your calculator on  
Press .  
Clearing the memory  
To get into STAT mode, press . Now press . You should see CA above the key (for Clear All). 
Entering data  
one variable  
Press (this brings you into STAT mode; fourth on the red list above the screen). Press for onevariable (SD on the gray list below the screen). Enter the first number, then . The screen will say n=1 because you have entered one data point. Enter the next number, then . The screen will say n=2 because you have entered two data points. Continue until all the data has been entered.  
two variables  
Press (this brings us to the STAT mode; fourth on the red list above the screen). Then press for twovariable mode (a+bx on the gray list below the screen). Enter the first xvalue, then (you should see (x,y) above the key). Enter the corresponding yvalue, then . The screen will say n=1 because you have entered one data point. Enter the second xvalue, then . Enter the second yvalue, then . The screen will say n=2 because you have entered two data points. Continue until all the data has been entered. 
Calculating onevariable statistics  
mean (x)  
Press (has an up arrow above the key).  
standard deviation for populations (s or s_{n})  
Press (has an up arrow above the key).  
standard deviation for samples (s or s_{n1})  
Press (has an up arrow above the key). 
Calculating twovariable statistics 

r (correlation)  
Press (has an up arrow above the key).  
regression coefficients  
slope  
Press (has a little up arrow above the key).  
yintercept  
Press (has a little up arrow above the key). 
Calculating combinations and permutations  
combinations (nCr)  
First press to get into regular numeric mode. Then enter n, press , and enter r. Press .  
permutations (nPr)  
First press to get into regular numeric mode. Then enter n, press , and enter r. Press . 
Turning the calculator off  
Press . It's next to . 
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. (e^{x}).
A: What is the mean and standard deviation of the following list of numbers?
15 16 20 21
1: Clear Memory  (CA) 
2: Enter Data  
3: Compute the mean  
4: Compute the population standard deviation  
5: Compute the sample standard deviation 
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  (CA) 
2: Enter Data 

3: Compute the slope of the regression line  
4: Compute the yintercept of the regression line  
5: Compute the correlation 
You should get a slope of 1.6, a yintercept of 0.5, and a
correlation of 0.992277876.
The regression line would be: y = 1.6x+0.5.
1:Compute _{10}C_{6}  
2: Compute _{9}P_{5}  (nPr) 
You should get _{10}C_{6 }= 210 and _{9}P_{5}=
15120.
For more information, consult the manual.