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 can see ON written to the side.)|
|Clearing the memory|
|Press . You can also physically reset the calculator settings by pushing the reset button on the back of the calculator (it's small so use a sharp pencil or needle). Then press .|
|Press to get into the 1-variable statistics mode. Enter the first number in your list and press (you should see the word DATA written underneath the RUN key). Enter the second number and press . Repeat until finished.|
|Press to get into the linear regression mode. Enter the first x-value in your list. Press (you should see (xD,yD) above the key). Enter the first value and press (you should see the word DATA written underneath the RUN key). Repeat until finished.|
|Calculating one-variable statistics|
|Press (you should see x over the key).|
|standard deviation for populations (s or sn)|
|Press (you should see xsn over the key).|
|standard deviation for samples (s or sn-1)|
|Press (you should see xsn-1 over the key).|
Calculating two-variable statistics
|Press (you should see r over the key).|
|Press (you should see B over the key).|
|Press (you should see A over the key).|
|Calculating combinations and permutations|
|Enter the n value. Press (you should see nCr written above the key). Enter the r value. Press .|
|Enter the n value. Press (you should see nPr written above the key). Enter the r value. Press .|
|Turning the calculator off|
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
A: What is the mean and standard deviation of the following list of numbers?
15 16 20 21
|1: Clear Memory|
|2: Enter the data|
|3: Compute the mean||(x)|
|4: Compute the population standard deviation.||(xsn)|
|5: Compute the sample standard deviation:||( 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.
|1: Clear Memory|
|2: Enter Data||(LR)|
|3: Compute the slope of the regression line||(B)|
|4: Compute the y-intercept of the regression line.||(A)|
|5: Compute the correlation.||(r)|
C: Find 10C6 and 9P5.
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||(nCr)|
|2: Compute 9P5||(nPr)|
You should get 10C6 = 210 and 9P5= 15120.