X̂

X with circumflex
X with circumflex
X̂x̂
Usage
Type	alphabetic
Language of origin	Aleut language, Haida language
Sound values	[χ]
In Unicode	U+0058 + U+0302, U+0078 + U+0302
History
Development	Ξ 𐊐 𐊐 X x X̂x̂; ; ; ; ; ; ;
	This article contains phonetic transcriptions in the International Phonetic Alphabet (IPA). For an introductory guide on IPA symbols, see Help:IPA. For the distinction between [ ], / / and ⟨ ⟩, see IPA § Brackets and transcription delimiters.

X̂ is the Latin letter X with a circumflex. The letter is used in the modern orthography of the Aleut language and in the current Alaska Native Language Center alphabet of the Haida language. In both cases, it represents the sound [χ].

In mathematics, x̂ often refers to the unit vector in the +X direction. In statistics, it can also represent the predicted value for x, consistent with the hat notation.

Character information
Preview	X		x		̂
Unicode name	LATIN CAPITAL LETTER X		LATIN SMALL LETTER X		COMBINING CIRCUMFLEX
Encodings	decimal	hex	dec	hex	dec	hex
Unicode	88	U+0058	120	U+0078	770	U+0302
UTF-8	88	58	120	78	204 130	CC 82
Numeric character reference	X	X	x	x	̂	̂

References

↑ Bergsland, Knut (1994). Aleut Dictionary = Unangam Tunudgusii: an unabridged lexicon of the Aleutian, Pribilof, and Commander Islands Aleut language. Fairbanks, AK: Alaska Native Language Center, University of Alaska. ISBN 978-1-55500-047-9.
↑ Lachler, Jordan. "Ways of Writing Haida". Retrieved 25 November 2012.
↑ Bailey, Michael (2021). Real Stats: Using Econometrics for Political Science and Public Policy. pp. 310–311. ISBN 978-0-19-085949-7.

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[1] Bergsland, Knut (1994). Aleut Dictionary = Unangam Tunudgusii: an unabridged lexicon of the Aleutian, Pribilof, and Commander Islands Aleut language. Fairbanks, AK: Alaska Native Language Center, University of Alaska. ISBN 978-1-55500-047-9.

[wwh-2] Lachler, Jordan. "Ways of Writing Haida". Retrieved 25 November 2012.

[3] Bailey, Michael (2021). Real Stats: Using Econometrics for Political Science and Public Policy. pp. 310–311. ISBN 978-0-19-085949-7.