পদ্ধতির তুলনা করুন
নির্বাচিত পদ্ধতিগুলো পাশাপাশি পর্যালোচনা করুন; যে সারিগুলোয় পার্থক্য আছে সেগুলো চিহ্নিত করা হয়।
| সরল দৈবচয়ন প্রতিচয়ন× | বহু-পর্যায় নমুনায়ন× | |
|---|---|---|
| ক্ষেত্র | জরিপ পদ্ধতি | জরিপ পদ্ধতি |
| পরিবার | Process / pipeline | Process / pipeline |
| উদ্ভবের বছর≠ | Early 20th century; systematized by Cochran 1953/1977 | 1950s–1960s (formalized in Kish 1965 and Cochran 1977) |
| প্রবর্তক≠ | William Gosset, Jerzy Neyman, and formalized by William Cochran | Leslie Kish; William G. Cochran |
| ধরন | Probability sampling design | Probability sampling design |
| মৌলিক উৎস≠ | Cochran, W. G. (1977). Sampling Techniques (3rd ed.). John Wiley & Sons. ISBN: 978-0471162407 | Kish, L. (1965). Survey Sampling. John Wiley & Sons. ISBN: 978-0471109495 |
| অপর নাম | SRS, unrestricted random sampling, equal-probability sampling, EPSEM | multistage cluster sampling, multi-stage sampling, nested sampling, hierarchical sampling |
| সম্পর্কিত≠ | 6 | 5 |
| সারসংক্ষেপ≠ | Simple random sampling (SRS) is the foundational probability sampling method in which every unit in the population has an equal and independent chance of being selected. Because selection is governed purely by chance, SRS eliminates systematic bias, supports unbiased estimation of population parameters, and provides the statistical baseline against which all more complex probability designs are evaluated. | Multistage sampling is a probability-based design that selects a sample by working through two or more successive levels of a population hierarchy — for example, first selecting regions, then districts within those regions, then households within those districts. It makes large-scale surveys practical when a complete population list is unavailable or when the population is geographically dispersed, by concentrating fieldwork within a manageable number of sampled units at each stage. |
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