TI-30XIIS



TI-81

|Entering Data (single list of data points each with frequency 1) |Entering Data (from a frequency distribution) |

|Clear previous data: |Clear previous data: |

|Press [pic] [pic][pic] |Press [pic] [pic][pic] |

|Press down arrow to ClrStat |Press down arrow to ClrStat |

|Press [pic] |Press [pic] |

|Press [pic] |Press [pic] |

| | |

|Enter the data | |

| |Enter the data and frequencies |

|Press [pic] [pic][pic] | |

|Press down arrow to ClrStat |Press [pic] [pic][pic] |

|Press [pic] |Press down arrow to ClrStat |

| |Press [pic] |

|Input the first number after X1= | |

|Press [pic] [pic] |Input the first number after X1= |

| |Press [pic] |

|Input the second number after X2= |Input the first frequency after Y1= |

|Press [pic] [pic] |Press [pic] |

| | |

| |Input the second number after X2= |

|Continue until you have entered all the data |Press [pic] |

| |Input the second frequency after Y2= |

|Press [pic] [pic] |Press [pic] |

| | |

| |Press [pic] [pic] |

|Calculating mean and standard deviation | |

|Press [pic] [pic] | |

|Press down arrow to 1-Var |Calculating mean and standard deviation |

|Press [pic] |Press [pic] [pic] |

| |Press down arrow to 1-Var |

| |Press [pic] |

Reading mean and standard deviation

[pic] is the mean.

[pic] is the standard deviation.

[pic]

-----------------------

ENTER

QUIT

2nd

STAT

MATRX

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