During the last two or three decades, multivariate statistical analysis has become increasingly popular. The theory has made great progress, and with the rapid advances in computer technology, routine applications of multivariate statistical methods are implemented in several statistical software packages, making it simple even for the novice to undertake fairly sophisticated multivariate stati...

Copyright: © 2014 Robotti E, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Rapid population growth as well as agricultural and industrial development have increased the contamination of Iranian rivers. This study utilized principal components analysis (PCA) to determine the degree of significance of qualitative parameters of water resources in the Karkheh River in southwestern Iran. Cluster analysis (CA) grouped the monitoring stations based on the water quality data ...

CONTEXT Pregnancy ambivalence, or conflicted desire about having a baby, has been associated with decreased contraceptive use and unintended pregnancy. However, prior studies have neither included men nor focused on young adults, even though people in their 20s have the highest rates of unintended pregnancy. METHODS Nationally representative data from 2008-2009 were used to examine pregnancy ...

in order to study the realationship between genetic diversity and different characteristics associated with grain yield in barley, 28 genotypes of barley cultivars contain seven cultivars and 21 hybrids were evaluated in randomized complete block (rcb) design with three replications. cultivars were valfajr, makuei, kavir, rayhan, gorgan, nusrat and nimroz. this study was carried out in research...