I am writing a book chapter in Portuguese to be used in grad and undergrad courses and it is about how to use stats in Ecology but.... I have a conceptual doubt.....
Reading some stats textbooks I can find that.... 1 - An experiment is an experiment because there is an independent variable (a factor or treatment) with diferent levels (a qualitative variable) 2 - But...... following this reasoning....... people working with regression are never working with experiments? Then, what is precisely an experiment ???? I would like to have your comments because I am feeling that many people are using statistical theory without asking themselves if they agree or believe in what they are reading, writing and saying...... Thanks........... Voltolini ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Prof. J. C. VOLTOLINI Grupo de Estudos em Ecologia de Mamiferos (ECOMAM) Universidade de Taubate, Departamento de Biologia Praca Marcelino Monteiro 63, Bom Conselho. Taubate, SP. CEP 12030-010. BRASIL. Tel: 0XX12 - 2254165 (Lab. Zool.) ou 2254277 (Depto. Biol.) E-Mail: [EMAIL PROTECTED] http://www.ecomam.hpg.ig.com.br ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ "Tutto di noi � un angelo con un'ala e possiamo volare soltanto se ci abbracciamo" . . ================================================================= Instructions for joining and leaving this list, remarks about the problem of INAPPROPRIATE MESSAGES, and archives are available at: . http://jse.stat.ncsu.edu/ . =================================================================
