Casio Calculators, DT button

I just read the user guide of my calculator and it turns out you can do standard deviations on it when in SD mode. It says to press the DT button which is on the body of the calulator, in blue besides the M+ button. How do I get it to work, and how to I preform Standard Devation with it.

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Aitch

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Bebop

I just read the user guide of my calculator and it turns out you can do standard deviations on it when in SD mode. It says to press the DT button which is on the body of the calulator, in blue besides the M+ button. How do I get it to work, and how to I preform Standard Devation with it.

Once you're in SD mode, the M+ button becomes the DT button.

So to enter a list 9,6,3, type

9 DT 6 DT 3 DT

The display will show something like n=3
Always remember to follow the instructions about clearing the stats memory before you start.