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Sample Size

Methodology & design

Definition

The number of observations in a study; adequate size is needed for statistical power and credible estimates.

Where it's used

Power-based planning before data collection
Defending analysis choices at proposal and viva stage

Software used

G*PowerSPSS

Related concepts

Sampling Effect Size p-value Conceptual Framework Construct Validity Cross-sectional Study

Read the complete guide A–Z encyclopedia

Guides that use this concept

How to Determine Your Sample Size (Without the Guesswork)

Types of Research Design: Which One Fits Your Study?

How to Choose a PhD Research Topic You Won't Regret

Qualitative vs Quantitative vs Mixed Methods: Which Fits Your Study?

Mentoring for this area:Research Methodology Research Questions & Objectives Questionnaire Design

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