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

 Turn your calculator on Press . Clearing the memory Press .

 Entering data one variable Press (You should see the word STAT above the key. Once pressed, you will see the word STAT in the upper right hand corner of the screen) to enter STAT mode. Enter the first number in your list and press . Enter the second number and press . Continue likewise until the end of the list. two variables This calculator does not do two variable statistics.

 Calculating one-variable statistics mean (x) While still in STAT mode, press (you should see x in white above the key - on the left). standard deviation for populations (s or sn) While still in STAT mode, press (you should see d in yellow above the key - on the right). standard deviation for samples (s or sn-1) While still in STAT mode, press (you should see s in white above the key - on the left).

 Calculating two-variable statistics r (correlation) This calculator does not do correlation. regression coefficients slope This calculator does not do regression. y-intercept This calculator does not do regression.

 Calculating combinations and permutations combinations (nCr) There is no direct command, but you can work it out using the factorial key. Enter n. Press (you should see n! above the key in yellow) . Enter r. Press . Enter the difference between n and r. Press . permutations (nPr) There is no direct command, but you can work it out using the factorial key. Enter n. Press (you should see n! above the key in yellow) . Enter r. Press .

 Turning the calculator off Press .

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 2: Enter Data 3: Compute the mean (x) 4: Compute the population standard deviation (d) 5: Compute the sample standard deviation (s)

You should get a mean of 18, population standard deviation of 2.549509757 and a sample standard deviation of 2.943920289.

C: Find 10C6 and 9P5.
 1:Compute 10C6 (n!) (4 = 10 - 6) 2: Compute 9P5 ( n!)

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

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