The position of the graphically represented keys can be found by moving your mouse on top of the graphic. The round buttons on the top do not constitute a row. Row 1 begins with the x-1 key. 

Turn your calculator on
Press The On/A C Key: Row 5, Column 5 .
Clearing the memory
For one variable problems, press The Mode Key: Small round button on top. To the right of the large arrows button. The Two Key: Row 7, Column 2 to get into SD (standard deviation) mode. Then press The Shift Key: The leftmost little round key at the top of the calculator The On/A C Key: Row 5, Column 5 (the scl above the key means statistical clear) The Equals Key: Row 8, Column 5.

For two variable problems press The Mode Key: Small round button on top. To the right of the large arrows button. The Three Key: Row 7, Column 3 (REG, for regression) The One Key: Row 7, Column 1 (for linear regression), then The Shift Key: The leftmost little round key at the top of the calculator The On/A C Key: Row 5, Column 5 The Equals Key: Row 8, Column 5.

 

Entering data
one variable
Clear the memory as shown above. Enter each element of your list followed by the The M Plus Key: Row 4, Column 6 key. (The DT below the key stands for DaTa.)
two variables
Clear the memory as shown above. Enter the first x-value in your list, followed by The Comma Key: Row 4, Column 5, followed by the first y-value in your list. Then press The M Plus Key: Row 4, Column 6. (The DT below the key stands for DaTa.) Enter the remaining pairs in the same manner: x-value, comma, y-value, The M Plus Key: Row 4, Column 6.

 

Calculating one-variable statistics
mean (x)
Press The Shift Key: The leftmost little round key at the top of the calculator The One Key: Row 7, Column 1 (x) The Equals Key: Row 8, Column 5
standard deviation for populations (s or sn)
Press The Shift Key: The leftmost little round key at the top of the calculator The Two Key: Row 7, Column 2 (xsn) The Equals Key: Row 8, Column 5
standard deviation for samples (s or sn-1)
Press The Shift Key: The leftmost little round key at the top of the calculator The Three Key: Row 7, Column 3 (xsn-1) The Equals Key: Row 8, Column 5.

Calculating two-variable statistics
r (correlation)
Press The Shift Key: The leftmost little round key at the top of the calculator The Left Parenthesis Key: Row 4, Column 3 (r) The Equals Key: Row 8, Column 5.
regression coefficients
slope
Press The Shift Key: The leftmost little round key at the top of the calculator The Eight Key: Row 5, Column 2 (B) The Equals Key: Row 8, Column 5.
y-intercept
Press The Shift Key: The leftmost little round key at the top of the calculator The Seven Key: Row 5, Column 1 (A) The Equals Key: Row 8, Column 5.


Calculating combinations and permutations
combinations (nCr)
Enter the n-value. Press The n C r Key: Row 1, Column 2. Enter the r-value, followed by The Equals Key: Row 8, Column 5.
permutations (nPr)
Enter the n-value. Press The Shift Key: The leftmost little round key at the top of the calculator The n C r Key: Row 1, Column 2 (nPr will appear above the key). Enter the r-value, followed by The Equals Key: Row 8, Column 5.

 

Turning the calculator off
Press The Off Key: Rightmost little round button on top. It's blue..

 

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 Mode Key: Small round button on top. To the right of the large arrows button. The Two Key: Row 7, Column 2 (SD) The Shift Key: The leftmost little round key at the top of the calculator The On/A C Key: Row 5, Column 5 (scl) The Equals Key: Row 8, Column 5
2: Enter Data  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: The leftmost little round key at the top of the calculator The One Key: Row 7, Column 1 (x) The Equals Key: Row 8, Column 5
4: Compute the population standard deviation  The Shift Key: The leftmost little round key at the top of the calculator The Two Key: Row 7, Column 2 (xsn) The Equals Key: Row 8, Column 5
5: Compute the sample standard deviation  The Shift Key: The leftmost little round key at the top of the calculator 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  The Mode Key: Small round button on top. To the right of the large arrows button. The Three Key: Row 7, Column 3 (REG) The One Key: Row 7, Column 1 (linear) The Shift Key: The leftmost little round key at the top of the calculator The On/A C Key: Row 5, Column 5 The Equals Key: Row 8, Column 5
2: Enter Data  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: The leftmost little round key at the top of the calculator The Eight Key: Row 5, Column 2 ( B) The Equals Key: Row 8, Column 5
4: Compute the y-intercept of the regression line  The Shift Key: The leftmost little round key at the top of the calculator The Seven Key: Row 5, Column 1 ( A) The Equals Key: Row 8, Column 5
5: Compute the correlation  The Shift Key: The leftmost little round key at the top of the calculator The Left Parenthesis Key: Row 4, 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 n C r 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: The leftmost little round key at the top of the calculator The n C r 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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