Getting the Standard Deviation from your calculator:

 

I have used the following data set to get the mean with several different calculators.

 

1, 1, 1, 4, 7, 7, 7    standard deviation = 3

 

Current Calculators that I have in my office:

 

 

 

There are hundreds of calculators on the market that find the standard deviation.  If you do not have one of these calculators, you have several options.

 

Casio fx-115MS

 

 

Casio FX 115 ES

 

 

TI-30Xa

 

 

TI-30XIIS

 

TI-36X

 

 

TI-83, TI-83 Plus

stdDev({1,1,1,4,7,7,7})

Notice the insertion of the curly brackets. These are very important. After the above is entered, hit Enter.

 

TI-89

stdDev({1,1,1,4,7,7,7})

Notice the insertion of the curly brackets. These are very important. After the above is entered, hit Enter.