The position of the graphically represented keys can be found by moving your mouse on top of the graphic. 

Turn your calculator on
Press Row 5 Column 5. (You can see ON written to the side.)
Clearing the memory
Press Row 1 Column 1 It's Yellow. . You can also physically reset the calculator settings by pushing the reset button on the back of the calculator (it's small so use a sharp pencil or needle). Then press bottom right.

 

Entering data
one variable
Press The leftmost key on the top row of keys underneath the screen. Row 7 Column 3 to get into the 1-variable statistics mode. Enter the first number in your list and press bottom right (you should see the word DATA written underneath the RUN key). Enter the second number and press bottom right. Repeat until finished.
two variables
Press The leftmost key on the top row of keys underneath the screen. Row 7 Column 2 to get into the linear regression mode. Enter the first x-value in your list. Press Row 4 Column 1 (you should see (xD,yD) above the key). Enter the first value and press bottom right (you should see the word DATA written underneath the RUN key). Repeat until finished.

 

Calculating one-variable statistics
mean (x)
Press Row 1 Column 1 It's Yellow. Row 7 Column 1 (you should see x over the key).
standard deviation for populations (s or sn)
Press Row 1 Column 1 It's Yellow. Row 7 Column 2 (you should see xsn over the key).
standard deviation for samples (s or sn-1)
Press Row 1 Column 1 It's Yellow. Row 7 Column 3 (you should see xsn-1 over the key).

Calculating two-variable statistics
r (correlation)
Press Row 1 Column 1 It's Yellow. Row 5 Column 3 (you should see r over the key).
regression coefficients
slope
Press Row 1 Column 1 It's Yellow. Row 5 Column 2 (you should see B over the key).
y-intercept
Press Row 1 Column 1 It's Yellow. Row 5 Column 1 (you should see A over the key).


Calculating combinations and permutations
combinations (nCr)
Enter the n value. Press Row 1 Column 1 It's Yellow. Row 6 Column 5 (you should see nCr written above the key). Enter the r value. Press Row 8 Column 4.
permutations (nPr)
Enter the n value. Press Row 1 Column 1 It's Yellow. Row 6 Column 4 (you should see nPr written above the key). Enter the r value. Press Row 8 Column 4.

 

Turning the calculator off
Press Row 1 Column 6.

 

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  Row 1 Column 1 It's Yellow.
2: Enter the data  The leftmost key on the top row of keys underneath the screen. Row 7 Column 3 Row 7 Column 1 Row 6 Column 2 bottom right Row 7 Column 1 Row 6 Column 3 bottom right Row 7 Column 2 Row 8 Column 1 bottom right Row 7 Column 2 Row 7 Column 1 bottom right
3: Compute the mean  Row 1 Column 1 It's Yellow. Row 7 Column 1 (x)
4: Compute the population standard deviation.  Row 1 Column 1 It's Yellow. Row 7 Column 2 (xsn)
5: Compute the sample standard deviation:  Row 1 Column 1 It's Yellow. Row 7 Column 3 ( xsn-1)


    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  Row 1 Column 1 It's Yellow.
2: Enter Data  The leftmost key on the top row of keys underneath the screen. Row 7 Column 2 (LR) Row 7 Column 1 Row 4 Column 1 Row 7 Column 2 bottom right Row 7 Column 2 Row 4 Column 1 Row 5 Column 1 bottom right Row 7 Column 3 Row 4 Column 1 Row 6 Column 2 bottom right Row 5 Column 1 Row 4 Column 1 Row 5 Column 1 bottom right 
3: Compute the slope of the regression line  Row 1 Column 1 It's Yellow. Row 5 Column 2 (B)
4: Compute the y-intercept of the regression line.  Row 1 Column 1 It's Yellow. Row 5 Column 1 (A)
5: Compute the correlation.  Row 1 Column 1 It's Yellow. Row 5 Column 3 (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  Row 7 Column 1 Row 8 Column 1 Row 1 Column 1 It's Yellow. Row 6 Column 5 Row 6 Column 3 (nCr) Row 8 Column 4
2: Compute 9P5  Row 5 Column 3 Row 1 Column 1 It's Yellow. Row 6 Column 4 Row 6 Column 2 (nPr) Row 8 Column 4


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

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