The keys on the keyboard portion of this calculator will be referred to by the command in blue, not the letter. The numeric keypad keys will be referred to by the number on the key.
The position of the graphically represented keys can be found by moving your mouse on top of the graphic. 

Turn your calculator on
Press The ON Key is in the upper right hand corner -- with ON in green above the long thin key..
Clearing the memory
Press The STAT Key: Row 1, Column 2 The Plus Minus Key: Row 5, Column 11. (It says CSR above the key - Clear Statistical Registers.)

 

Entering data
one variable
First press The STAT Key: Row 1, Column 2 to get into the stat mode. Then enter the first number in your list and press The Sigma Plus Key: Row 3, Column 10. Enter the second number and press The Sigma Plus Key: Row 3, Column 10. Continue likewise for the rest of the list.
two variables
First press The STAT Key: Row 1, Column 2 to get into the stat mode. Then enter the first x-value in your list, press The X Comma Y Key: Row 3, Column 9, enter the first y-value and press The Sigma Plus Key: Row 3, Column 10. Then enter the second x-value in your list, press The X Comma Y Key: Row 3, Column 9, enter the second y-value and press The Sigma Plus Key: Row 3, Column 10. Continue likewise for the rest of the list.

 

Calculating one-variable statistics
mean (x)
Press The STAT Key: Row 1, Column 2 The Divided by Key: Row 2, Column 14. You should see (x) in yellow on the key.
standard deviation for populations (s or sn)
There is no single command key, but there is a back-door way: After entering your data, press The STAT Key: Row 1, Column 2 The Divided by Key: Row 2, Column 14 The STAT Key: Row 1, Column 2 The Minus Key: Row 4, Column 14. 
standard deviation for samples (s or sn-1)
Press The STAT Key: Row 1, Column 2 The Minus Key: Row 4, Column 14. You should see (sx) in yellow on the key.

Calculating two-variable statistics
r (correlation)
Press The STAT Key: Row 1, Column 2 The One Key: Row 4, Column 11. You should see r in yellow on the key.
regression coefficients
slope
Press The STAT Key: Row 1, Column 2 The Three Key: Row 4, Column 13. You should see b in yellow on the key.
y-intercept
Press The STAT Key: Row 1, Column 2 The Two Key: Row 4, Column 12. You should see a in yellow on the key.


Calculating combinations and permutations
combinations (nCr)
Enter n. Press The X Comma Y Key: Row 3, Column 9. Enter r. Press The N C R Key: Row 3, Column 7.
permutations (nPr)
Enter n. Press The X Comma Y Key: Row 3, Column 9. Enter r. Press The N P R Key: Row 3, Column 6.

 

Turning the calculator off
Press The Off Key is a long thin key in the upper right. It has OFF written in red above the key..

 

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  The STAT Key: Row 1, Column 2 The Plus Minus Key: Row 5, Column 11 (CSR)
2: Enter Data  The STAT Key: Row 1, Column 2 The One Key: Row 4, Column 11 The Five Key: Row 3, Column 12 The Sigma Plus Key: Row 3, Column 10 The One Key: Row 4, Column 11 The Six Key: Row 3, Column 3 The Sigma Plus Key: Row 3, Column 10 The Two Key: Row 4, Column 12 The Zero Key: Row 5, Column 12 The Sigma Plus Key: Row 3, Column 10 The Two Key: Row 4, Column 12 The One Key: Row 4, Column 11 The Sigma Plus Key: Row 3, Column 10
3: Compute the mean  The STAT Key: Row 1, Column 2 The Divided by Key: Row 2, Column 14 (x)
4: Compute the population standard deviation  The STAT Key: Row 1, Column 2 The Divided by Key: Row 2, Column 14 The STAT Key: Row 1, Column 2 The Minus Key: Row 4, Column 14
5: Compute the sample standard deviation  The STAT Key: Row 1, Column 2 The Minus Key: Row 4, Column 14 (sx)


    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  The STAT Key: Row 1, Column 2 The Plus Minus Key: Row 5, Column 11 (CSR)
2: Enter Data  The STAT Key: Row 1, Column 2 The One Key: Row 4, Column 11 The X Comma Y Key: Row 3, Column 9 The Two Key: Row 4, Column 12 The Sigma Plus Key: Row 3, Column 10 The Two Key: Row 4, Column 12 The X Comma Y Key: Row 3, Column 9 The Four Key: Row 3, Column 11 The Sigma Plus Key: Row 3, Column 10 The Three Key: Row 4, Column 13 The X Comma Y Key: Row 3, Column 9 The Five Key: Row 3, Column 12 The Sigma Plus Key: Row 3, Column 10 The Four Key: Row 3, Column 11 The X Comma Y Key: Row 3, Column 9 The Seven Key: Row 2, Column 11 The Sigma Plus Key: Row 3, Column 10 
3: Compute the slope of the regression line  The STAT Key: Row 1, Column 2 The Three Key: Row 4, Column 13 (b)
4: Compute the y-intercept of the regression line  The STAT Key: Row 1, Column 2 The Two Key: Row 4, Column 12 (a) 
5: Compute the correlation  The STAT Key: Row 1, Column 2 The One Key: Row 4, Column 11 (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

 The One Key: Row 4, Column 11 The Zero Key: Row 5, Column 12 The X Comma Y Key: Row 3, Column 9 The Six Key: Row 3, Column 3 The N C R Key: Row 3, Column 7
2: Compute 9P5  The Nine Key: Row 2, Column 13 The X Comma Y Key: Row 3, Column 9 The Five Key: Row 3, Column 12 The N C R Key: Row 3, Column 7


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

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