Before any statistical calculations, you must press . All of the commands below will assume that you have done so.

The position of the graphically represented keys can be found by moving your mouse on top of the graphic. The four bullet shaped keys are not counted as rows. Row one starts with the PROG key.

Turn your calculator on |
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Press . | |||||||||

Clearing the memory |
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Press (to get into statistics mode). Press (The cursor should underline D-CL). Press . |

Entering data |
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one variable |
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After pressing (to get into statistics mode), the cursor should underline 1-VAR (if it doesn't, arrow over to it). Press . Type in first number. Press .(The second down-arrow is to verify only 1 entry of that number.) Type in second number. Press . Continue until all the data has been entered. | |||

two
variables (regression) |
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After pressing (to get into statistics mode), the cursor should underline 1-VAR. Press to get the cursor under REG. Press .The cursor will underline LIN. Press . Press .(You just selected DATA-INPUT.) Type in the first x-value. Press . Type in the first y-value. Press . Type in the second x-value. Press . Type in the second y-value. Press . Continue until all the data has been entered. |

Calculating one-variable statistics
To get the one-variable statistics, press (STATVAR). All the choices should appear. Arrow to the ones you want, the result should appear on the bottom of the screen. The instructions below assume the cursor starts on n. |
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mean |
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Press (x). | ||||

standard
deviation for populations (s
or s_{n}) |
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Press (sx). | ||||

standard deviation for samples
(s or s_{n-1}) |
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Press (sx). |

To get the one-variable statistics, press (STATVAR). All the choices should appear. Arrow to the ones you want, the result should appear on the bottom of the screen. The instructions below assume the cursor starts on a. |
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r
(correlation) |
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Press (the cursor should be under r). The answer should appear at the bottom of the screen. | |||||

regression coefficients |
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slope |
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Press (the cursor should be under b). | |||||

y-intercept |
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Press nothing (the cursor should be under a). |

Calculating combinations and
permutations |
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combinations
(nCr) |
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Enter the n value. Press (yes, 4 times. The cursor should be under 1 nCr) Enter the r value, then . The answer will appear on the bottom of the screen. | ||||

permutations
(nPr) |
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Enter the n value. Press (yes, 4 times. The cursor should be under 0 nPr) Enter the r value, then . The answer will appear on the bottom of the screen. |

Turning the calculator off |
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Press . |

**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 | (stat) (D-CL) . |

2: Enter the data: | (1-VAR) |

3: Compute the mean | (STATVAR) |

4: Compute the standard deviation (population): | (STATVAR) |

5: Compute the standard deviation (sample): | (STATVAR) |

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) (D-CL) |

2: Enter Data | (1-VAR) (REG) (LIN) (DATA-INPUT) |

3: Compute the slope of the regression line | (b) |

4: Compute the y-intercept of the regression line | (a) |

5: Compute the correlation | (r) |

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 _{10}C_{6} |
(1 nCr) |

2: Compute _{9}P_{5} |
(0 nPr) |

You should get _{10}C_{6 }= 210 and _{9}P_{5}=
15120.

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