◇ Sampling Toolkit
Sampling, done right
Two free tools that take you from "how many should we survey?" to a defensible sampling plan — first learn the ideas, then design your study. Built for MEL practitioners across South Asia.
Level 1 · Learn the ideas
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Level 2 · Design your sample
Level 1 · Primer
Sampling Basics Free
New to sampling? Start here. A plain-language, no-maths, ten-minute grounding in the ideas — with two quick interactive demos.
- Population vs sample; why we don't measure everyone
- Bias & representativeness (convenience-vs-random demo)
- Margin of error & confidence (a sample-size slider)
- Clusters, describing vs comparing, a plain glossary
Level 2 · Studio
Sampling Design Studio Free · export Premium
Already know the basics? Design a real, defensible sampling strategy and size it properly — with the maths shown and explained as you go.
- Recommends a strategy — SRS, stratified, cluster, multistage
- Sizes proportion, mean and impact (power/MDE) designs
- ICC library, cluster cost optimiser, live self-validation
- Printable plan & a donor/IRB "defend this number" note
Which do I need?
• Never designed a sample before? Start with Sampling Basics — ten minutes, no maths.
• Know the concepts and need a real number and plan? Go straight to the Sampling Design Studio.
• Just want a quick sample size? The Studio does that too — pick your question and read off the number.