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Loengu slaidid

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Üldkogumi keskväärtuse usaldusvahemik<br />

¯x = 1 n<br />

n<br />

i=1<br />

x i , E¯x = EX , D¯x = σ2<br />

n .<br />

Tsentraalse piirteoreemi kohaselt on ¯x asümptootiliselt normaalne,<br />

st. kui n on küllalt suur, siis ¯x on ligikaudu normaaljaotusega<br />

parameetritega EX ja √ D¯x = σ/ √ n.<br />

P(EX ∈ (¯x − ε β , ¯x + ε β ))

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