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bpo-36018: Update example to show mean and stdev (GH-13047)

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Raymond Hettinger 2019-05-01 17:49:12 -07:00 • committed by GitHub
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Doc/whatsnew/3.8.rst
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@ -424,8 +424,10 @@ and manipulating normal distributions of a random variable.
:: ::
>>> temperature_feb = NormalDist.from_samples([4, 12, -3, 2, 7, 14]) >>> temperature_feb = NormalDist.from_samples([4, 12, -3, 2, 7, 14])
>>> temperature_feb >>> temperature_feb.mean
NormalDist(mu=6.0, sigma=6.356099432828281) 6.0
>>> temperature_feb.stdev
6.356099432828281
>>> temperature_feb.cdf(3) # Chance of being under 3 degrees >>> temperature_feb.cdf(3) # Chance of being under 3 degrees
0.3184678262814532 0.3184678262814532
@ -433,8 +435,8 @@ and manipulating normal distributions of a random variable.
>>> temperature_feb.pdf(7) / temperature_feb.pdf(10) >>> temperature_feb.pdf(7) / temperature_feb.pdf(10)
1.2039930378537762 1.2039930378537762
>>> el_nino = NormalDist(4, 2.5) >>> el_niño = NormalDist(4, 2.5)
>>> temperature_feb += el_nino # Add in a climate effect >>> temperature_feb += el_niño # Add in a climate effect
>>> temperature_feb >>> temperature_feb
NormalDist(mu=10.0, sigma=6.830080526611674) NormalDist(mu=10.0, sigma=6.830080526611674)