The position of the graphically represented keys can be found by moving your mouse on top of the graphic. The topmost row of round buttons do not constitute a row. Row 1 starts with the Abs key.
| Turn your calculator on | |||||||||
Press
 . |
|||||||||
| Clearing the memory | |||||||||
Press
(STAT)
(the edit choice). Now press
to choose Del-A, for delete all. |
|||||||||
| Entering data | |||
| one variable | |||
Press
to get into one variable entry mode. Enter the first number in your list and
press
 .
Enter the remaining numbers, pressing
after each. Finally, press
to get back to the main screen. |
|||
| two variables | |||
Press
(A+Bx) to get into two variable entry mode. Enter the first x-value
in your list and press
.
Enter the remaining x-values, pressing
after each. Press
and  as many
times as needed to get to the first row again. Enter the corresponding
y-values, pressing
after each. Finally, press
to get back to the main screen. |
|||
| Calculating one-variable statistics | ||||
| mean (x) | ||||
Press
(STAT)
(VAR). Press
for x. Press
to see the answer. |
||||
| standard deviation for populations (s or sn) | ||||
| Press
(STAT)
(VAR). Press
for xsn.
Press
to see the answer. |
||||
| standard deviation for samples (s or sn-1) | ||||
Press
(STAT)
(VAR). Press
for xsn-1.
Press
to see the answer. |
||||
|
Calculating two-variable statistics |
|||||
| r (correlation) | |||||
Press
(STAT)
(REG). Now press
for r, the correlation. Press
to see the answer. |
|||||
| regression coefficients | |||||
| slope | |||||
| Press
(STAT)
(REG). Now press
for B, the slope. Press
to see the answer. |
|||||
| y-intercept | |||||
| Press
(STAT)
(REG). Now press
for A, the y-intercept. Press
to see the answer. |
|||||
| Calculating combinations and permutations | ||||
| combinations (nCr) | ||||
Enter the n value and
press
 .
Now enter the r-value and press
.
|
||||
| permutations (nPr) | ||||
Enter the n value and
press
 .
Now enter the r-value and 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)
(Del-A) |
| 2: Enter Data |
|
| 3: Compute the mean |
(STAT)
(VAR)
(x)
|
| 4: Compute the population standard deviation |
(STAT)
(VAR)
(xsn)
|
| 5: Compute the sample standard deviation |
(STAT)
(VAR)
(xsn-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 |
(STAT)
(Del-A) |
| 2: Enter Data |
(A+Bx)
|
| 3: Compute the slope of the regression line |
(STAT)
(REG)
(r)
|
| 4: Compute the y-intercept of the regression line |
(STAT)
(REG)
(A)
|
| 5: Compute the correlation |
(STAT)
(REG)
(B)
|
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.
| 1:Compute 10C6 |
|
| 2: Compute 9P5 | 
(nPr)
|
You should get 10C6 = 210 and 9P5=
15120.
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