Outlier Screening and a Distribution-Free Test for Vanishing Tetrads  

Oleh:

Bolllen, Kenneth A.

Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: Sociological Methods & Research (SMR) vol. 19 no. 01 (Aug. 1990), page 80-92.
Topik: TETRAD II; Screening; Distribution-Free Test
Fulltext: BOLLEN-80-92 ; Bernard.pdf (1.03MB)

Ketersediaan

Perpustakaan PKPM Nomor Panggil: S28 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

Lihat Detail Induk

Isi artikel

The TETRAD search procedure has several limitations: It does not screen data for outliers; it relies on Wishart's test for vanishing tetrads that assumes a multinormal distribution for the random variables; and the significance tests do not take into account that multiple tetrad differences are being tested. l propose several ways to overcome these problems. First, l present several diagnostic statistics to help identify outliers and influential cases. Then l develop new, more general asymptotic tests for vanishing tetrads for variables with nonnormal distributions and derive a simultaneous test for multiple tetrad differences. Finally, the tests are extended to apply to tetrad differences of covariances as well as differences of correlations computed for random variables with "arbitrary" distributions.

Opini Anda

Klik untuk menuliskan opini Anda tentang koleksi ini!

Kembali