The Student Room Group

Casio 991ES

Does anyone know if there is a way on the bad boy 991es to go from probability to z-value for normal distribution.

It seems strange you can go from z-value to probability but not the other way around.
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Original post by Arsey
Does anyone know if there is a way on the bad boy 991es to go from probability to z-value for normal distribution.

It seems strange you can go from z-value to probability but not the other way around.


Only by trial and improvement at which point you might as well look it up in the table. :tongue:

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