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 scl above the key, scl means Statistical CLear.) Press .

 Entering data one variable Enter the first number. Press . Enter the second number, followed by . Continue until you have entered all of the numbers. two variables Clear the memory. Enter the first x-value, press , and enter the corresponding y-value. Press . Continue until you have entered all of the numbers.

 Calculating one-variable statistics mean (x) Press . (You should see x above the 1 key.) standard deviation for populations (s or sn) Press . (You should see sn above the 2 key.) standard deviation for samples (s or sn-1) Press . (You should see sn-1 above the 3 key.)

 Calculating two-variable statistics You must press to get into the regression mode.  Enter the data and follow the instructions below. r (correlation) Press . You should see the letter r above the left parenthesis key. regression coefficients slope Press . You should see the letter A above the seven key. y-intercept Press . You should see the letter B above the eight key.

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

 Turning the calculator off Press . If you forget, the calculator will turn itself off in five minutes.

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 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.

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 3: Compute the slope of the regression line (A) 4: Compute the y-intercept of the regression line. (B) 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 2: Compute 9P5 (nPr)

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

Go to: