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

Turn your calculator on
	Press .  When referring to rows and columns do not count this key as a row.
Clearing the memory
	Press .  You should see the letters FIN (for financial mode) on the screen.  Now press .  The word STAT is above the key (this puts the calculator in Statistics mode).  Note: turning off the calculator does not erase the memory.

Entering data
	one variable
		Enter the first number, then press .  The screen will say 1 because, so far, you have entered one data point.  If it says something other than 1, clear the memory and start over.  Now enter the second number, then press .  The screen will say 2 because you have now entered two data points.  Continue until all the data has been entered.
	two variables
		This calculator does not do linear regression.

Calculating one-variable statistics
	mean (x)
		Press  .
	standard deviation for populations (s or sn)
		Press .
	standard deviation for samples (s or sn-1)
		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 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	(STAT)
2: Enter Data
3: Compute the mean
4: Compute the standard deviation (population)
5: Compute the standard deviation (sample)

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

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