A379853 Decimal expansion of the fraction of a population falling beyond +- 1 standard deviation of the mean, assuming a normal distribution.

3, 1, 7, 3, 1, 0, 5, 0, 7, 8, 6, 2, 9, 1, 4, 1, 0, 2, 8, 2, 9, 5, 3, 4, 9, 0, 8, 7, 3, 5, 9, 2, 4, 1, 5, 5, 0, 4, 4, 1, 7, 4, 0, 6, 6, 5, 4, 6, 7, 9, 1, 2, 1, 8, 0, 2, 5, 2, 1, 1, 0, 9, 9, 5, 1, 4, 0, 1, 7, 1, 1, 6, 0, 2, 5, 5, 9, 0, 3, 4, 0, 9, 9, 8, 2, 3, 0, 1, 6, 3, 1, 8, 8, 7, 2, 1, 3, 4, 4, 9

Offset: 0

Author

Stefano Spezia, Jan 04 2025

Keywords

• nonn
• cons

Examples

			0.3173105078629141028295349087359241550441740665...
		

References

• Jerome Spanier and Keith B. Oldham, "Atlas of Functions", Hemisphere Publishing Corp., 1987, chapter 40, table 40:7:1 at page 387.

Links

• Eric Weisstein's World of Mathematics, Erfc.

Crossrefs

Cf. A178647, A239382.

Programs

Mathematica

RealDigits[Erfc[1/Sqrt[2]], 10, 100][[1]]

Formula

Equals 1 - A178647 = 2*A239382. - Hugo Pfoertner, Jan 04 2025