Outcome 1
Define the target population, accessible population, unit and sampling frame precisely.
Research Design · Premium downloadable PDF
Research Sampling & Sample Size Course
Choose a defensible sampling strategy and sample-size logic while making selection, recruitment, non-response and inference limits visible.
Who this is for
A practical self-study system for researchers.
Researchers designing quantitative, qualitative, mixed-method, document-based or case-study samples for proposals and completed studies.
The PDF course is written in English and designed for independent, self-paced study. It explains each decision, provides fictional illustrations, and includes workbook pages that you can print or complete separately against your own research.
The purchase does not include private document review, editing, data analysis, or live sessions. Those are available through the live group fee or a separately quoted one-to-one or institutional format.
Learning outcomes
What you should be able to do after the course.
Achievement depends on completing the lessons, using the worksheets, practising the decisions, and applying the process to your own work.
Outcome 2
Select probability, purposive or other sampling logic that fits the research design.
Outcome 3
Justify sample size using analysis, precision, power or information needs as appropriate.
Outcome 4
Document recruitment, non-response, exclusions and limits on inference.
PDF course syllabus
A practical sequence from foundations to final checks.
21 pages of original instruction, guided decision tools, printable worksheets, and completion checks.
- 01
Population, Unit and Sampling Frame
Define exactly who or what the study concerns and what source can be used for selection.
- 02
Probability and Non-Probability Strategies
Choose a selection method whose assumptions match the design and intended inference.
- 03
Sample Size, Power and Information Adequacy
Justify the amount of evidence using assumptions appropriate to the primary analysis or qualitative purpose.
- 04
Recruitment, Non-Response and Sampling Reporting
Implement the planned sample ethically and show how participation affects the final evidence base.
Apply this learning
Connect the course to a practical guide or scoped support.
Start with the free guide. If your own document, design, data, or journal requirements need individual review, use the matching support page to define the scope.
Practical guideData Analysis Readiness Checklist for Thesis Research
A practical checklist for preparing datasets, codebooks, transcripts, missing-data decisions and analysis files.
Read Data analysis readiness Project supportDesign a method that can genuinely answer the research question.Methodology support connects the question to a defensible design, evidence source, sampling strategy, measurement or interview process, analysis plan, and ethical approach.
Review Methodology supportIncluded in the PDF purchase
Instruction, worksheets, and a documented learning route.
- 21-page focused PDF course + printable workbook
- Original lessons, decision rules, and worked illustrations
- Printable decision worksheets and quality checklists
- Course-completion audit and 30-day action plan
- Verified primary-guidance links and a personal-use licence
Not included
- Writing or completing your assessed submission for you
- Live teaching, individual editing, data analysis, or document review unless separately purchased
- University accreditation, academic credit, or professional licensing
- Guaranteed approval, grade, journal acceptance, or publication timing
Course and training options
Choose the level of guidance and personalisation.
21-page focused PDF course + printable workbook with a personal-use licence and secure post-payment download.
Request PDF purchase4 live sessions delivered online across 2 weeks, with shared activities and included resources.
Request live enrolmentPrivate sessions adapted to your stage, discipline, objectives, and preferred timetable.
Request a quoteA private workshop or licensed learning package for a university, department, research team, or organisation.
Request group trainingEvery button opens the request page. No course is charged, downloaded, or reserved until the WhatsApp request is manually confirmed in writing and the resulting payment is verified.
Course questions
Know what you are requesting.
The website starts a WhatsApp request, not an automatic checkout. The selected format, exact amount, availability, terms, and official payment route are manually confirmed in writing before payment.
How does the PDF purchase request work?
The website prepares a WhatsApp request; it does not take payment. The institute manually confirms the exact course, published price, terms, and official payment route in writing. Pay only after that confirmation.
How is the PDF delivered?
After the payment-provider, bank, or wallet record is verified, a personal download link is sent to the email address and WhatsApp number supplied with the request. Keep those details accurate and retain the receipt.
May I print or share the course?
You may save and print a copy for your own learning. Redistribution, resale, public upload, classroom distribution, or inclusion in another commercial product is not permitted under the personal licence.
Does the course provide one universal sample-size formula?
No. Appropriate sample-size logic depends on the design, primary analysis, precision, assumptions and evidence purpose.
Is purposive sampling acceptable for PhD research?
Yes when it fits the methodology and intended claims. The strategy, criteria and inference boundary must be justified transparently.
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