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

Turn your calculator on
	Press . (You should see the word ON to the right of the key.)
Clearing the memory
	Press (you should see SAC, for Stat All Clear, above the key).

Entering data
	one variable
		Press .  This puts you in STAT mode.  SD will appear on the screen.  Type in first number.  Press .   Type in second number.  Press .   Continue until all the data has been entered.
	two variables
		This calculator does not do regression.

Calculating one-variable statistics
	mean (x)
		Press .  You should see x above the key.
	standard deviation for populations (s or sn)
		Press .  You should see sn above the key.
	standard deviation for samples (s or sn-1)
		Press .  You should see sn-1 above the key.

Calculating combinations and permutations
	combinations (nCr)
		Enter the n value.  Press (you should see nCr above the key).  Enter the r value.  Press .
	permutations (nPr)
		Enter the n value.  Press (you should see nPr above the key).  Enter the r value.  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 e^x as (e^x).

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

15      16      20      21

1: Clear Memory	(SAC)
2: Enter Data
3: Compute the mean	(x)
4: Compute the population standard deviation	(sn)
5: Compute the sample standard deviation.	(sn-1)

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

1: Compute 10C6	(nCr)
2: Compute 9C5	(nPr)

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

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