This is a preview. Log in through your library . Abstract Determining ages of neonatal black bear (Ursus americanus) cubs is complicated by difficulty in obtaining accurate birth dates while ...

In this article, we study the quantile regression estimator for GARCH models. We formulate the quantile regression problem by a reparametrization method and verify that the obtained quantile ...

A simple regression model based on the pretreatment estimated glomerular filtration rate (eGFR) reliably predicted the ...

A behind-the-scenes blog about research methods at Pew Research Center. For our latest findings, visit pewresearch.org. Many of Pew Research Center’s survey analyses show relationships between two ...