Nehodí se? Vůbec nevadí! U nás můžete do 30 dní vrátit
S dárkovým poukazem nešlápnete vedle. Obdarovaný si za dárkový poukaz může vybrat cokoliv z naší nabídky.
Surveys That Work explains a sevenstep process for designing, running, and reporting on a survey that gets accurate results. In a nononsense style with plenty of examples about realworld compromises, the book focuses on reducing the errors that make up Total Survey Errora key concept in survey methodology. If you are conducting a survey, this book is a musthave.