Random Route and Quota Sampling: Do They Offer Any Advantage over Probably Sampling Methods?

• 作者: Valentín Martínez Martín Vidal Díaz de Rada
• 来源期刊: 统计学期刊(英文)
• 学科: 医学
• 关键词: Sampling Methods RANDOM Sampling MULTISTAGE Cluster Sampling RANDOM ROUTE Method QUOTA Sampling
• 年，卷（期）: 2014,（5）
• 页码范围: 391-401
• 页数: 11页
• 分类号: R73

摘要

The aim of this paper is to compare sample quality across two probability samples and one that uses probabilistic cluster sampling combined with random route and quota sampling within the selected clusters in order to define the ultimate survey units. All of them use the face-to-face interview as the survey procedure. The hypothesis to be tested is that it is possible to achieve the same degree of representativeness using a combination of random route sampling and quota sampling (with substitution) as it can be achieved by means of household sampling (without substitution) based on the municipal register of inhabitants. We have found such marked differences in the age and gender distribution of the probability sampling, where the deviations exceed 6%. A different picture emerges when it comes to comparing the employment variables, where the quota sampling overestimates the economic activity rate (2.5%) and the unemployment rate (8%) and underestimates the employment rate (3.46%).