Statistikada variatsiyani baholash usullari va dispersion tahlil asoslari

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*^*Manba: Lames McClave, Terry Sincich. Statistics. 12^th edition. Pearson Education, Inc. 2013. 61p.

*^*Manba: Lames McClave, Terry Sincich. Statistics. 12^th edition. Pearson Education, Inc. 2013. 61-64 pp.

*^*Bu erda s² ning (n-1) bo’luvchi bilan hisoblanishi, σ² ning siljimagan bahosi hisoblanadi.

^s² ni hisoblashda necha o’nli kasrgacha yaxlitlanishi kerak? Bu borada yaxlitlash to’g’risida aniq qoida bo’lmaganligi sabali, zarur bo’ladigan natijadan ikki barobar ko’p darajagacha yaxlitlash zarur. Masalan, siz s ning aniqlik darajasi yuzdan birgacha yaxlitlikda chiqishini istasangiz, s² natijasi mingdan bir darajagacha (to’rt xonagacha) yaxlitlash zarur.

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