Kev faib T yog ib qho piv txwv ntawm leptocurtic distribution. Nws muaj cov tails fatter dua li qub (koj tuaj yeem saib thawj daim duab saum toj no kom pom cov tails fatter). Yog li ntawd, qhov tseem ceeb ntawm tus menyuam qhov kev xeem t-test yuav loj dua qhov tseem ceeb ntawm qhov kev xeem z. Kev faib tawm.
Yuav faib dab tsi yog T tis?
Kev faib tawm T, tseem hu ua Tus Tub Kawm Ntawv t-kev faib tawm, yog hom kev muaj peev xwm faib tawm uas zoo ib yam li kev faib tawm ib txwm nrog nws lub tswb tab sis muaj tails hnyav dua. T kev faib tawm muaj lub caij nyoog ntau dua rau qhov muaj nuj nqis tshaj qhov kev faib tawm ib txwm, yog li cov tails fatter.
Kev faib tawm twg yog Leptokurtic?
Leptokurtic distributions yog faib nrog kurtosis zoo loj dua li qhov kev faib tawm ib txwm. Ib qho kev faib tawm ib txwm muaj kurtosis ntawm peb. Yog li ntawd, ib qho kev faib nrog kurtosis ntau dua peb yuav raug sau npe tias yog leptocurtic distribution.
Ib qho piv txwv ntawm kev faib tawm Leptocurtic yog dab tsi?
Ib qho piv txwv ntawm kev faib tawm leptokurtic yog Laplace faib, uas muaj cov tails uas asymptotically mus zero qeeb dua li Gaussian, thiab yog li tsim tawm ntau tshaj li qhov kev faib tawm ib txwm.
Kuv yuav paub li cas yog tias kuv cov ntaub ntawv yog Platykurtic lossis Leptokurtic?
K < 3 qhia a platykurtic distribution (flatter than aib txwm faib nrog luv tails). K > 3 qhia txog kev faib tawm leptokurtic (ntau tshaj qhov kev faib tawm ib txwm nrog cov tails ntev). K=3 qhia ib txwm "bellshaped" faib (mesokurtic). K < 3 qhia txog kev faib tawm platykurtic.
