Art of Stat: Resampling

Izikhathi Zokuzethemba I-Bootstrap Nokuhlolwa Kwezimvume Zendlela, AmaMedi, Izilinganiso, I-Correlation Coefficient kanye neSlope, kanye Nokuhlolwa Kwe-Chi-Square Yokuzimela.

Izibalo zesimanje zokubala zothisha nabafundi bezibalo.

I-Art of Stat: Uhlelo lokusebenza lokusampula kabusha likuvumela ukuthi uthole izikhawu zokuzethemba ze-bootstrap kanye namanani we-P okuvumela. Uhlelo lokusebenza lubonisa izinqubo ngokuhlanganyela ukuze uqonde ukuthi zisebenza kanjani. Izibonelo ezimbalwa zedathasethi zilayishwa kusengaphambili ukuze uzihlole, kodwa ungakwazi futhi ukufaka idatha yakho noma ungenise ifayela le-CSV.

Kusetshenziswa izindlela ezilandelayo zokusampula kabusha:

- I-Bootstrap Confidence Interval yesilinganiso sabantu, i-median, noma ukuchezuka okujwayelekile.

- I-Bootstrap Confidence Interval yengxenye yabantu noma amathuba okuba nenani labantu.

- I-Bootstrap Confidence Interval yokuhlobana kwabantu (u-Pearson no-Spearman) noma umthamo wesibalo sabantu wemodeli yokuhlehla.

- I-Bootstrap Confidence Interval yomehluko wezindlela ezimbili zabantu noma abaphakathi.

- Ukuhlolwa Kwemvume kwenani labantu noma i-median.

- Ukuhlolwa Kwezimvume zomehluko wezindlela ezimbili zabantu noma abaphakathi.

- Ukuhlolwa Kwezimvume zokuzimela kokuhlukahluka kwezigaba ezimbili (Ukuhlolwa kwe-Permutation Chi-squared)

Thola kalula isikhawu sokuzithemba se-bootstrap ngokusekelwe kumaphesenti nezinye izindlela. Ukuze uthole ukucatshangelwa mayelana nezindlela zabantu, qhathanisa imiphumela nezindlela ezijwayelekile ezisuselwe ekusabalaliseni koMfundi-t. Ocwaningweni lokuzimela oluphindeke kabili lwe-Chi, qhathanisa nemiphumela evela kuhlolo lwe-Chi-squared luka-Pearson.

Inqubo ngayinye inezikrini ezintathu:

1) Faka Idatha esikrinini sokuqala ngezindlela ezihlukahlukene, futhi uthole izibalo ezichazayo namagrafu ahambisanayo (i-Histogram, Boxplot, Ishadi Lebha).

2) Khiqiza i-bootstrap noma ukusatshalaliswa kwezimvume esikrinini sesibili, isinyathelo ngesinyathelo, noma i-1,000 ngesikhathi.

3) Thola i-Bootstrap Confidence Interval noma I-Permutation P-value esikrinini sesithathu, kanye nolwazi oluningi olusekelayo kanye nokuqhathanisa nokwakudala, okusekelwe kumkhawulo omaphakathi.

Uhlelo lokusebenza luza nezibonelo ezimbalwa zedathasethi elayishwe ngaphambili, kodwa ungakwazi futhi ukulayisha elakho ifayela le-CSV noma udale elilodwa kusihleli sedatha.

Yabelana kalula ngemiphumela ngokuthatha izithombe-skrini.

Vula konke okuqukethwe ngenkokhelo encane yesikhathi esisodwa!