Before any statistical calculations, you must press for onevariable statistics mode or for twovariable (linear regression) mode.
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 onevariable statistics mode). Type in first number. Press (you should see DT below the key, in blue). Type in second number. Press . Continue until all the data has been entered.
two variables
Press (to get into twovariable mode). Clear memory. Type in the first xvalue, then , then the corresponding yvalue. Press . Continue in this manner until all the data has been entered.
Calculating onevariable statistics
To get into onevariable statistics mode, press .
mean
Press (x) .
standard deviation for populations (s or s_{n})
Press (x s_{n}) .
standard deviation for samples (s or s_{n1})
Press (x s_{n1} ) .
Calculating twovariable statistics
Press to get into twovariable (linear regression mode). Then enter the data and follow the directions below.
r (correlation)
Press (you should see r above the key), then .
regression coefficients
slope
Press (you should see A above the key), then .
yintercept
Press (you should see B above the key), then .
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 nonuse).
Worked Out Examples
In the following examples, we list the exact key sequence used to find the answer. We list the keys by the main symbol on the key. In parentheses we include a helpful mnemonic, e.g. (e^{x}).
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: 
(DT)

3: Compute the mean  (x) 
4: Compute the standard deviation (population):  (x s_{n}) 
5: Compute the standard deviation (sample):  (x s_{n1}) 
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  (a) 
4: Compute the yintercept of the regression line  (b) 
5: Compute the correlation  (r) 
You should get a slope of 1.6, a yintercept of 0.5, and a
correlation of 0.992277876.
The regression line would be: y = 1.6x+0.5.
1: Compute _{10}C_{6}  (_{n}C_{r} ) 
2: Compute _{9}P_{5}  (_{n}P_{r} ) 
You should get _{10}C_{6 }= 210 and _{9}P_{5}=
15120.
For more information, consult a manual.
Click here for the sample problem set.
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