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 . You should see CA above the key for Clear All.

 Entering data Make sure you are in statistics mode: Press (mode) for one variable and  (mode) for regression calculations. one variable Enter the first number and press . Enter the second number and press . Continue for all the other numbers in the list. two variables Enter the first x-value, press , and enter the corresponding y-value. Press . Continue for all the other ordered pairs.

 Calculating one-variable statistics mean (x) Press . You should see x above the 4 key. standard deviation for populations (s or sn) Press . You should see sx above the 6 key. standard deviation for samples (s or sn-1) Press . You should see sx above the 5 key.

 Calculating two-variable statistics r (correlation) Press . You should see r above the division key. regression coefficients slope Press . You should see b above the right parenthesis key. y-intercept Press . You should see a above the left parenthesis key.

 Calculating combinations and permutations Make sure you are in normal mode before you do these. Press . combinations (nCr) Enter the n value, press (you should see nCr above the 5 key), and the r value. Press . permutations (nPr) Enter the n value, press (you should see nPr above the 6 key), and the r value. 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 the data (MODE) 3: Compute the mean (x) 4: Compute the population standard deviation. (sx) 5: Compute the sample standard deviation: (sx)

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 2: Enter Data (MODE) (,)      (,) (,)     (,) 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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