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Model Perspective
Model Perspective
Jan 10, 2024 · Fundamentals

How Many Survey Responses Do You Really Need? A Practical Guide to Calculating Sample Size

Determining the right sample size is crucial for reliable survey results, and this article explains the key factors—population size, confidence level, margin of error, response rate, and effect size—while walking through a concrete example of calculating the needed respondents for a university library service study.

confidence intervalmargin of errorresearch design
0 likes · 7 min read
How Many Survey Responses Do You Really Need? A Practical Guide to Calculating Sample Size
DeWu Technology
DeWu Technology
Aug 29, 2022 · Fundamentals

Fundamentals of Statistics for A/B Testing and Its Application in the DeWu Platform

A solid grasp of basic statistical concepts—such as populations, samples, means, variance, probability distributions, the Central Limit Theorem, and hypothesis testing—enables designers of A/B experiments to correctly size samples, interpret p‑values and confidence intervals, and reliably deploy DeWu’s integrated platform for automated experiment allocation, metric monitoring, and one‑click reporting, ultimately driving data‑driven product decisions.

A/B testingconfidence intervaldata-driven
0 likes · 13 min read
Fundamentals of Statistics for A/B Testing and Its Application in the DeWu Platform