The position of the graphically represented keys can be found by moving your mouse on top of the graphic. 
The top row of keys (shift, alpha, mode and on) are not considered a row. Row 1 starts with x-1.

Turn your calculator on
Press The On Key: top row far right.
Clearing the memory
When you press the The Mode Key: top row - second from the right key while entering the data, the memory is cleared automatically.

 

Entering data
one variable
Press The Mode Key: top row - second from the right, then press The Two Key: Row 7, Column 2 for SD (standard deviation). Enter the first element in your list and press The M Plus Key: Row 4, Column 6, enter the rest of your list, pressing The M Plus Key: Row 4, Column 6 after each number.
two variables
Press The Mode Key: top row - second from the right, then press The Three Key: Row 7, Column 3 for REG (regression) The One Key: Row 7, Column 1 (for Lin, that is, linear). Enter the first x-value in your list and press The Comma Key: Row 4, Column 5. Then enter the first y-value in your list and press The M Plus Key: Row 4, Column 6. Continue in this fashion: x-value, The Comma Key: Row 4, Column 5, y-value, The M Plus Key: Row 4, Column 6.

 

Calculating one-variable statistics
mean (x)
Press The Shift Key: top row - first on the left The Two Key: Row 7, Column 2 (S-VAR is written above the key) The One Key: Row 7, Column 1 for x. Now press The Equals Key: Row 8, Column 5.
standard deviation for populations (s or sn)
Press The Shift Key: top row - first on the left The Two Key: Row 7, Column 2 (S-VAR is written above the key) The Two Key: Row 7, Column 2 for xsn. Now press The Equals Key: Row 8, Column 5.
standard deviation for samples (s or sn-1)
Press The Shift Key: top row - first on the left The Two Key: Row 7, Column 2 (S-VAR is written above the key) The Three Key: Row 7, Column 3 for xsn-1. Now press The Equals Key: Row 8, Column 5.

Calculating two-variable statistics
r (correlation)
Press The Shift Key: top row - first on the left The Two Key: Row 7, Column 2 (S-VAR is written above the key) The Right Arrow: press the big gray round button at the top on the right side. The Right Arrow: press the big gray round button at the top on the right side. The Three Key: Row 7, Column 3 for r. Now press The Equals Key: Row 8, Column 5.
regression coefficients
slope
Press The Shift Key: top row - first on the left The Two Key: Row 7, Column 2 (S-VAR is written above the key) The Right Arrow: press the big gray round button at the top on the right side. The Right Arrow: press the big gray round button at the top on the right side. The Two Key: Row 7, Column 2 for B. Now press The Equals Key: Row 8, Column 5.
y-intercept
Press The Shift Key: top row - first on the left The Two Key: Row 7, Column 2 (S-VAR is written above the key) The Right Arrow: press the big gray round button at the top on the right side. The Right Arrow: press the big gray round button at the top on the right side. The One Key: Row 7, Column 1 for A. Now press The Equals Key: Row 8, Column 5.


Calculating combinations and permutations
combinations (nCr)
Enter n. Press The nCr Key: Row 1, Column 2 (you'll see a C appear on the screen next to n). Enter r and press The Equals Key: Row 8, Column 5.
permutations (nPr)
Enter n. Press  The Shift Key: top row - first on the left The nCr Key: Row 1, Column 2 (nPr appears above the key). Enter r and press The Equals Key: Row 8, Column 5.

 

Turning the calculator off
Press The Shift Key: top row - first on the left (the word off appears aside 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   automatic with entering data
2: Enter Data  The Mode Key: top row - second from the right The Two Key: Row 7, Column 2 (SD) The One Key: Row 7, Column 1 The Five Key: Row 6, Column 2 The M Plus Key: Row 4, Column 6  The One Key: Row 7, Column 1 The Six Key: Row 6, Column 3 The M Plus Key: Row 4, Column 6  The Two Key: Row 7, Column 2 The Zero Key: Row 8, Column 1 The M Plus Key: Row 4, Column 6  The Two Key: Row 7, Column 2 The One Key: Row 7, Column 1 The M Plus Key: Row 4, Column 6
3: Compute the mean   The Shift Key: top row - first on the left The Two Key: Row 7, Column 2 (S-VAR) The One Key: Row 7, Column 1 (x) The Equals Key: Row 8, Column 5
4: Compute the population standard deviation  The Shift Key: top row - first on the left The Two Key: Row 7, Column 2 (S-VAR) The Two Key: Row 7, Column 2 (xsn) The Equals Key: Row 8, Column 5 
5: Compute the sample standard deviation  The Shift Key: top row - first on the left The Two Key: Row 7, Column 2 (S-VAR) The Three Key: Row 7, Column 3 (xsn-1) The Equals Key: Row 8, Column 5


    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    automatic with entering data
2: Enter Data  The Mode Key: top row - second from the right The Three Key: Row 7, Column 3 (REG) The One Key: Row 7, Column 1 (Lin) The One Key: Row 7, Column 1 The Comma Key: Row 4, Column 5 The Two Key: Row 7, Column 2 The M Plus Key: Row 4, Column 6 The Two Key: Row 7, Column 2 The Comma Key: Row 4, Column 5 The Four Key: Row 6, Column 1 The M Plus Key: Row 4, Column 6 The Three Key: Row 7, Column 3 The Comma Key: Row 4, Column 5 The Five Key: Row 6, Column 2 The M Plus Key: Row 4, Column 6 The Four Key: Row 6, Column 1 The Comma Key: Row 4, Column 5 The Seven Key: Row 5, Column 1 The M Plus Key: Row 4, Column 6
3: Compute the slope of the regression line  The Shift Key: top row - first on the left The Two Key: Row 7, Column 2 (S-VAR) The Right Arrow: press the big gray round button at the top on the right side. The Right Arrow: press the big gray round button at the top on the right side. The Two Key: Row 7, Column 2 (B) The Equals Key: Row 8, Column 5
4: Compute the y-intercept of the regression line  The Shift Key: top row - first on the left The Two Key: Row 7, Column 2 (S-VAR) The Right Arrow: press the big gray round button at the top on the right side. The Right Arrow: press the big gray round button at the top on the right side. The One Key: Row 7, Column 1 (A) The Equals Key: Row 8, Column 5
5: Compute the correlation  The Shift Key: top row - first on the left The Two Key: Row 7, Column 2 (S-VAR) The Right Arrow: press the big gray round button at the top on the right side. The Right Arrow: press the big gray round button at the top on the right side. The Three Key: Row 7, Column 3 (r) The Equals Key: Row 8, Column 5


    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 7, Column 1 The Zero Key: Row 8, Column 1 The nCr Key: Row 1, Column 2 The Six Key: Row 6, Column 3 The Equals Key: Row 8, Column 5
2: Compute 9P5  The Nine Key: Row 5, Column 3 The Shift Key: top row - first on the left The nCr Key: Row 1, Column 2 (nPr) The Five Key: Row 6, Column 2 The Equals Key: Row 8, Column 5


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

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