This book deals mainly with: - The different sampling techniques - Sampling methods - The purpose of sampling is to reduce the cost of collecting data on a population by gathering information from a subset instead of the entire population. Sample surveys are often the most feasible way to collect the data needed for program evaluation.
Bitte wählen Sie Ihr Anliegen aus.
Rechnungen
Retourenschein anfordern
Bestellstatus
Storno