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(84) :normalcdf(lower, upper)

For a normal curve, this computes the area between z-values lower and upper.

(84) :normalcdf(lower, upper, mean, stDev)

For a normal curve with mean mean and standard deviation stDev, this computes the area between values lower and upper.

LocationEdit

TI-84

  • 2ND + VARS (DISTR)
  • DISTR
  • 2:normalcdf(

ExampleEdit

:normalcdf(-9E99,9E99)

computes the area onder the whole of a normal curve, at least to the calculator's precision. Returns 1.

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