LESSON 31 - SIMPLE RANDOM SAMPLING: DEFINITION & STEPS OF CONDUCTING SIMPLE RANDOM SAMPLING DESIGN

LESSON 31 - SIMPLE RANDOM SAMPLING: DEFINITION & STEPS OF CONDUCTING SIMPLE RANDOM SAMPLING DESIGN

by Prof. Lydiah Wambugu

Humanities, Social Sciences & Thought Science — General & History GPSResearch methodsGPSDQuantitative research methods
🎙 Prof. Lydiah Wambugu 👥 29K 📅 June 6, 2021 ⏱ 11 min 👁 9K 📄 tutorial 🧭 2026-08-17
Available in: English (current) Français

Keywords

simple random samplingsampling framerandom numberssample sizebias

Summary

This lesson is part of a research methods course and focuses on simple random sampling design. The instructor begins by defining simple random sampling as a probability sampling technique where each member of the population has an equal chance of being selected. She emphasizes the importance of random numbers and refers to previous lessons for context. The lesson outlines three main steps: developing a sampling frame by numbering the population, generating random numbers (e.g., using a table), and selecting the sample based on those numbers. An example is provided with a population of 500 and a sample size of 217. The strengths of simple random sampling are highlighted: it is easy to use, unbiased, and suitable for inexperienced researchers. Limitations include difficulty in accessing an accurate sampling frame, potential sampling error, time and cost for large populations, and possible selection bias if not inclusive. The lesson concludes with a summary and a preview of the next topic: stratified random sampling.

160 words

Critical Evaluation

Value of the Information & Strength of the Argument

The video provides valuable information for students and practitioners needing a clear, step-by-step guide to simple random sampling. The argumentation is logical and structured, moving from definition to steps to strengths and limitations. The instructor uses a concrete example to illustrate the process, which enhances understanding. However, the presentation is somewhat basic and does not delve into advanced considerations such as sampling without replacement, the use of random number generators, or the mathematical basis for sample size determination. The argumentation is solid but not deeply critical; it presents the method as straightforward without discussing potential pitfalls in detail beyond the listed limitations.

Scientific Rigor, Source Quality, Title Accuracy

The scientific rigor is moderate. The content is accurate and aligns with standard research methodology textbooks, but the video does not cite specific sources or references. The instructor mentions previous lessons and a course website, but no external academic sources are provided. The title accurately reflects the content, and the video is well-structured. The lack of citations reduces the overall rigor, but the information is presented in a coherent and reliable manner for an introductory audience.

193 words

Title / Content Match

The title accurately reflects the content, which focuses on defining simple random sampling and outlining the steps to conduct it.

Quality & Reliability

7/10

The video provides a clear and accurate explanation of simple random sampling, including definition, steps, and strengths/limitations. It is based on established research methodology principles. However, it lacks citations to external sources and does not address potential controversies or advanced nuances.

Key Moments

Markers derived by PSI from the transcript: the creator did not define chapters.

Cited Sources

  • Research Methods Course — The instructor refers to this course for further learning.
  • YouTube Channel — The instructor encourages subscription to the channel.
  • LinkedIn — Social media link for following the instructor.
  • Facebook — Social media link for following the instructor.
  • Instagram — Social media link for following the instructor.
  • WhatsApp — Contact option for questions.

Concurring Sources

Contribution & Novelties

The video provides a clear and concise introduction to simple random sampling, suitable for beginners. It offers a step-by-step guide that is easy to follow. However, it does not introduce novel concepts or advanced techniques. The main contribution is pedagogical, making the method accessible.

Pour aller plus loin :

84 words

Radar Profile

The radar profile shows moderate scores across all dimensions, indicating a balanced but not exceptional video. The highest score is in fiabilite_globale (7), reflecting the accuracy of the content, while the lowest is in niveau_technique (5), suggesting it is not highly technical. This is appropriate for an introductory tutorial.

Reliability 7/10

💬 No comments were provided for analysis.