The position of the graphically represented keys can be found by moving your mouse on top of the graphic. The function keys do not count as a row.

 Turn your calculator on Press . Clearing the memory To get into STAT mode, press .  Now press .  You should see CA above the key (for Clear All).

 Entering data one variable Press (this brings you into STAT mode; fourth on the red list above the screen).  Press for one-variable (SD on the gray list below the screen).  Enter the first number, then .  The screen will say n=1 because you have entered one data point.    Enter the next number, then .  The screen will say n=2 because you have entered two data points.  Continue until all the data has been entered. two variables Press (this brings us to the STAT mode; fourth on the red list above the screen).  Then press for two-variable mode (a+bx on the gray list below the screen).  Enter the first x-value, then (you should see (x,y) above the key).  Enter the corresponding y-value, then .  The screen will say n=1 because you have entered one data point.  Enter the second x-value, then .  Enter the second y-value, then .  The screen will say n=2 because you have entered two data points.  Continue until all the data has been entered.

 Calculating one-variable statistics mean (x) Press (has an up arrow above the key). standard deviation for populations (s or sn) Press (has an up arrow above the key). standard deviation for samples (s or sn-1) Press (has an up arrow above the key).

 Calculating two-variable statistics r (correlation) Press (has an up arrow above the key). regression coefficients slope Press (has a little up arrow above the key). y-intercept Press (has a little up arrow above the key).

 Calculating combinations and permutations combinations (nCr) First press to get into regular numeric mode. Then enter n, press , and enter r. Press . permutations (nPr) First press to get into regular numeric mode. Then enter n, press , and enter r. Press .

 Turning the calculator off Press . It's next to .

Worked Out Examples

In the following examples, we list the exact key sequence used to find the answer.  We list the keys by the main symbol on the key.  In parentheses we include a helpful mnemonic, e.g. (ex).

A: What is the mean and standard deviation of the following list of numbers?

15      16      20      21

 1: Clear Memory (CA) 2: Enter Data 3: Compute the mean 4: Compute the population standard deviation 5: Compute the sample standard deviation

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 (CA) 2: Enter Data 3: Compute the slope of the regression line 4: Compute the y-intercept of the regression line 5: Compute the correlation

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 2: Compute 9P5 (nPr)

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