The position of the graphically represented keys can be found by moving your mouse on top of the graphic.
The SC-10 has some slanted keys and triangular keys on the top. These do not count as a row. The SC-10 also has a side flap with additional keys. Some explanations of statistical keys can be found by moving the side switch to its highest position.
 Turn your calculator on Press . Clearing the memory Select the mode you want: for basic statistics and for linear regression. Then press (you should see CSR, for Clear Statistical Registers, above the key).

 Entering data one variable Clear the memory as described above. Enter each number in the list and press after it. two variables Press to get into linear regression mode. Enter the first x value and press . Enter the first y value and press . Finish by pressing . Enter the remaining pairs in this fashion: x-value, , y-value, , .

 Calculating one-variable statistics mean (x) Press . standard deviation for populations (s or sn) Press . standard deviation for samples (s or sn-1) Press .

 Calculating two-variable statistics r (correlation) Press . regression coefficients slope Press . y-intercept Press .

 Calculating combinations and permutations Before you do combinations and permutations, press AC MODE DEC to get back to normal calculations mode. combinations (nCr) Enter n, then press . Enter r and press . Then press . permutations (nPr) Enter n, then press . Enter r and press . Then 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 (STAT 1) (CSR) 2: Enter Data 3: Compute the mean 4: Compute the population standard deviation 5: Compute the sample standard deviation

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 (STAT 2) (CSR) 2: Enter Data 3: Compute the slope of the regression line 4: Compute the y-intercept of the regression line 5: Compute the correlation

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

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

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