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(50g) Normal Distribution
12-08-2018, 09:18 PM
Post: #20
RE: (50g) Normal Distribution
(12-08-2018 08:15 PM)Albert Chan Wrote:  The extra precision is basically useless.

z-score = (x–µ)/σ, with all 3 variables non-exact.

Are they? For the standard Normal distribution µ is exactly 0 and σ is exactly 1. So there is a real benefit if the calculation is done with the best possible accuracy.

Sure, the general assumption for all numeric calculations, be it on a HP67, HP50g or a contemporary computer, is that the input is exact. So the input is not √2 but 1,41421356237, and not pi but 3,14159265359. That's a limitation that always applies.

But in other cases the input can be exact. And here there improved PDF offers a benefit.

Dieter
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Messages In This Thread
(50g) Normal Distribution - John Keith - 12-03-2018, 04:20 PM
RE: (50g) Normal Distribution - Dieter - 12-03-2018, 07:05 PM
RE: (50g) Normal Distribution - John Keith - 12-03-2018, 08:45 PM
RE: (50g) Normal Distribution - Dieter - 12-03-2018, 10:18 PM
RE: (50g) Normal Distribution - John Keith - 12-03-2018, 10:59 PM
RE: (50g) Normal Distribution - John Keith - 12-04-2018, 08:54 PM
RE: (50g) Normal Distribution - Dieter - 12-04-2018, 09:48 PM
RE: (50g) Normal Distribution - Dieter - 12-05-2018, 08:49 PM
RE: (50g) Normal Distribution - John Keith - 12-06-2018, 02:58 PM
RE: (50g) Normal Distribution - Dieter - 12-06-2018, 11:08 PM
RE: (50g) Normal Distribution - John Keith - 12-07-2018, 11:21 PM
RE: (50g) Normal Distribution - Dieter - 12-06-2018, 10:54 PM
RE: (50g) Normal Distribution - John Keith - 12-08-2018, 07:13 PM
RE: (50g) Normal Distribution - Dieter - 12-08-2018 09:18 PM
RE: (50g) Normal Distribution - John Keith - 12-08-2018, 09:28 PM
RE: (50g) Normal Distribution - John Keith - 01-26-2019, 10:01 PM
RE: (50g) Normal Distribution - pier4r - 01-26-2019, 10:12 PM



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