The position of the graphically
represented keys can be found by moving your mouse on top of the graphic.
When counting rows, do not count the
row of function keys on top.
Turn your calculator on | |||||||||
Press . | |||||||||
Clearing the memory | |||||||||
Enter and arrow to the STAT block (second from left on top row). Press (short for execute). You'll see some options on the bottom of the screen. Press to see more options. Press (DEL·A, for delete all). |
Entering data
Before typing in any data, get into stat mode by pressing and using the arrow keys to get to the STAT block (second from left on top row). Press (short for execute). You will see four empty lists. Use list one for the one variable mode and lists one and two for the regression problems. |
|||
one variable | |||
Enter the first element, press . Enter the second element, press . Continue until all the data has been entered. | |||
two variables | |||
Enter the first x-value and press . Enter the second x-value and press . Continue until all the x values have been entered. Press . Enter the first y-value (make sure it lines up with the corresponding x value) and press . Enter the second y-value and press . Continue until all of the y values have been entered. |
Calculating one-variable statistics
If you just finished entering the data, then you're ready to begin. If not, get into stat mode by pressing and using the arrow keys to get to the STAT block (second from left on top row). Press (short for execute). |
||||
mean (x) | ||||
Press (CALC) (1VAR). You will see a screen with several values. The mean is the first, labeled x. | ||||
standard deviation for populations (s or sn) | ||||
Press (CALC) (1VAR). You will see a screen with several values. The population standard deviation is the fourth, labeled xsn. | ||||
standard deviation for samples (s or sn-1) | ||||
Press (CALC) (1VAR). You will see a screen with several values. The sample standard deviation is the fifth, labeled xsn-1. You will need to press to see it on the screen. |
Calculating two-variable statistics Make sure you are in the initial stat mode when you do these. Get into stat mode by pressing and using the arrow keys to get to the STAT block (second from left on top row). Press (short for execute). |
|||||
r (correlation) | |||||
Press (CALC) (REG) (X, meaning linear regression). You will see a screen with several values. The correlation is the third, labeled r. | |||||
regression coefficients | |||||
slope | |||||
Press (CALC) (REG) (X, meaning linear regression). You will see a screen with several values. The slope is the first, labeled a. | |||||
y-intercept | |||||
Press (CALC) (REG) (X, meaning linear regression). You will see a screen with several values. The y-intercept is the second, labeled b. |
Calculating combinations and
permutations
You must be in the run mode for this to work. If you're not, press , then arrow to the RUN rectangle (upper left). Press (EXE is short for EXEcute). |
||||
combinations (nCr) | ||||
Enter the n value. Press . You will see choices on the bottom of the screen. Press (PROBability) (nCr). Finally, enter the r value and . | ||||
permutations (nPr) | ||||
Enter the n value. Press . You will see choices on the bottom of the screen. Press (PROBability) (nPr). Finally, enter the r value and . |
Turning the calculator off | ||
Press . (You should see OFF above the AC/ON key.) |
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).
Each of these directions assumes you are already
in stat mode, except for C, which assumes you are in run mode.
A: What is the mean and standard deviation of the following list of numbers?
15 16 20 21
1: Clear Memory | (DEL·A) |
2: Enter the data: | |
3: Compute the mean | (CALC) (1VAR) |
4: Compute the standard deviation (population): | (CALC) (1VAR) |
5: Compute the standard deviation (sample): | (CALC) (1VAR) |
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 | (DEL·A) |
2: Enter Data | |
3: Compute the slope of the regression line | (CALC) (REG) (X) |
4: Compute the y-intercept of the regression line | (CALC) (REG) (X) |
5: Compute the correlation | (CALC) (REG) (X) |
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 | (PROB) (nCr) |
2: Compute 9P5 | (PROB) (nPr) |
You should get 10C6 = 210 and 9P5=
15120.
Go to: