Turn your calculator on

Press The ON Key: Row 8, Column 1 .

Clearing the memory

Press The Orange Key: Row 6, Column 1 The -> M Key: Row 4, Column 3. You should see CLS on the slanted part of the second key. 

Entering data

     one variable

Enter the first value, then press The Sigma Plus Key: Row 3, Column 4. Enter the second value, press The Sigma Plus Key: Row 3, Column 4 and so on. The screen will display the number of values you have typed in.

     two variables

Enter the first x-value, press The Input Key: Row 2, Column 1, then enter the first y-value, Press The Sigma Plus Key: Row 3, Column 4 key. Do the same for each ordered pair. The screen will display the number of ordered pairs you have typed in.

Calculating one-variable statistics

     mean

  Press The Orange Key: Row 6, Column 1 The Seven Key: Row 5, Column 2. You should see x,y on the slanted part of the key.

     standard deviation for populations (s or sn)

  Press The Orange Key: Row 6, Column 1 The Nine Key: Row 5, Column 4. You should see sx,sy on the slanted part of the key.

     standard deviation for samples (s or sn-1)

  Press The Orange Key: Row 6, Column 1 The Eight Key: Row 5, Column 3. You should see sx,sy on the slanted part of the key

Calculating two-variable statistics

     r (correlation)

Press The Orange Key: Row 6, Column 1 The Four Key: Row 6, Column 2. You should see x-hat,r on the slanted part of the key, The Orange Key: Row 6, Column 1 The K Key: Row 3, Column 1. You should see SWAP on the slanted part of the key. 

   regression coefficients

    slope

Press The Zero Key: Row 8, Column 2 The Orange Key: Row 6, Column 1 The Five Key: Row 6, Column 3. You should see y-hat,m on the slanted part of the key. Now press The Orange Key: Row 6, Column 1 The K Key: Row 3, Column 1. You should see SWAP on the slanted part of the key.

    y-intercept

Press The Zero Key: Row 8, Column 2 zero key, The Orange Key: Row 6, Column 1 The Five Key: Row 6, Column 3. You should see y-hat,m on the slanted part of the key.

Computing the combinations and permutations

    combinations

This calculator does not do combinations.

    permutations

This calculator does not do permutations.

Turning the calculator off

Press The Orange Key: Row 6, Column 1 The ON Key: Row 8, Column 1. 

 

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. (ex).


A: What is the mean and standard deviation of the following list of numbers?

15      16      20      21

1: Clear Memory  The Orange Key: Row 6, Column 1 The -> M Key: Row 4, Column 3 (CLS)
2: Enter Data  The One Key: Row 7, Column 2 The Five Key: Row 6, Column 3 The Sigma Plus Key: Row 3, Column 4 The One Key: Row 7, Column 2 The Six Key: Row 6, Column 4 The Sigma Plus Key: Row 3, Column 4 The Two Key: Row 7, Column 3 The Zero Key: Row 8, Column 2 The Sigma Plus Key: Row 3, Column 4 The Two Key: Row 7, Column 3 The One Key: Row 7, Column 2 The Sigma Plus Key: Row 3, Column 4
3: Compute the mean  The Input Key: Row 2, Column 1 The Seven Key: Row 5, Column 2 (x,y)
4: Compute the standard deviation (population)  The Input Key: Row 2, Column 1 The Nine Key: Row 5, Column 4 (sx,sy)
5: Compute the standard deviation (sample)  The Input Key: Row 2, Column 1 The Eight Key: Row 5, Column 3 (sx,sy)


    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  The Orange Key: Row 6, Column 1 The -> M Key: Row 4, Column 3 (CLS)
2: Enter Data  The One Key: Row 7, Column 2 The Input Key: Row 2, Column 1 The Two Key: Row 7, Column 3 The Sigma Plus Key: Row 3, Column 4 The Two Key: Row 7, Column 3 The Input Key: Row 2, Column 1 The Four Key: Row 6, Column 2 The Sigma Plus Key: Row 3, Column 4 The Three Key: Row 7, Column 4 The Input Key: Row 2, Column 1 The Five Key: Row 6, Column 3 The Sigma Plus Key: Row 3, Column 4 The Four Key: Row 6, Column 2 The Input Key: Row 2, Column 1 The Seven Key: Row 5, Column 2 The Sigma Plus Key: Row 3, Column 4  
3: Compute the slope of the regression line  The Zero Key: Row 8, Column 2 The Input Key: Row 2, Column 1 The Five Key: Row 6, Column 3 (y-hat,m) The Orange Key: Row 6, Column 1 The K Key: Row 3, Column 1 (SWAP)
4: Compute the y-intercept of the regression line  The Zero Key: Row 8, Column 2 The Orange Key: Row 6, Column 1 The Five Key: Row 6, Column 3 (y-hat,m)
5: Compute the correlation  The Input Key: Row 2, Column 1 The Four Key: Row 6, Column 2 (x-hat,r) The Orange Key: Row 6, Column 1 The K Key: Row 3, Column 1 (SWAP)


    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.

 

For more information, consult the manual.

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