The position of the graphically represented keys can be found by moving your mouse on top of the graphic.
Turn your calculator on  
Press .  
Clearing the memory  
Press . You should see CA above the key for Clear All. 
Entering data
Make sure you are in statistics mode: Press (mode) for one variable and (mode) for regression calculations. 

one variable  
Enter the first number and press . Enter the second number and press . Continue for all the other numbers in the list.  
two variables  
Enter the first xvalue, press , and enter the corresponding yvalue. Press . Continue for all the other ordered pairs. 
Calculating onevariable statistics  
mean (x)  
Press . You should see x above the 4 key.  
standard deviation for populations (s or s_{n})  
Press . You should see s_{x} above the 6 key.  
standard deviation for samples (s or s_{n1})  
Press . You should see s_{x} above the 5 key. 
Calculating twovariable statistics 

r (correlation)  
Press . You should see r above the division key.  
regression coefficients  
slope  
Press . You should see b above the right parenthesis key.  
yintercept  
Press . You should see a above the left parenthesis key. 
Calculating combinations and
permutations
Make sure you are in normal mode before you do these. Press . 

combinations (nCr)  
Enter the n value, press (you should see nCr above the 5 key), and the r value. Press .  
permutations (nPr)  
Enter the n value, press (you should see nPr above the 6 key), and the r value. Press . 
Turning the calculator off  
Press . 
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 e^{x} as (e^{x}).
A: What is the mean and standard deviation of the following list of numbers?
15 16 20 21
1: Clear Memory  
2: Enter the data 
(MODE)

3: Compute the mean  (x) 
4: Compute the population standard deviation.  (s_{x}) 
5: Compute the sample standard deviation:  (s_{x}) 
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  
2: Enter Data 
(MODE)
(,)
(,) (,) (,) 
3: Compute the slope of the regression line  (b) 
4: Compute the yintercept of the regression line.  (a) 
5: Compute the correlation.  (r) 
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}  (nCr) 
2: Compute _{9}P_{5}  (nPr) 
You should get _{10}C_{6 }= 210 and _{9}P_{5}=
15120.
For more information, consult a manual.
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