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 SCL, for Stat CLear, over the key).

 Entering data one variable Press  (to get into one-variable statistics mode).  Enter the first number.  Press .  Enter the second number.  Press .  Continue until all the data has been entered. two variables Press     (to get into two-variable mode).  Clear memory.  Type in the first x-value, then  (you should see (xD,yD) below the key), then the corresponding y-value.  Press .  Continue in this manner until all the data has been entered.

 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 x sn above the key). standard deviation for samples (s or sn-1) Press (you should see x sn-1 above the key).

 Calculating two-variable statistics r (correlation) Press (you should see r above the key). regression coefficients slope Press (you should see B above the key). y-intercept Press (you should see A 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, then . permutations (nPr) Enter the n value.  Press (you should see nPr above the key).  Enter the r value, then .

 Turning the calculator off This is a solar calculator.  You can't turn it off.  EVER!  (Okay, it shuts down after two minutes of non-use).

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 (scl) 2: Enter the data: 3: Compute the mean (x) 4: Compute the standard deviation (population): (x sn) 5: Compute the standard deviation (sample): (x sn-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 (scl) 2: Enter Data (DT) 3: Compute the slope of the regression line (B) 4: Compute the y-intercept of the regression line (A) 5: Compute the correlation (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 (nCr ) 2: Compute 9P5 (nPr )

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

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