Research Tips
Practical guides to level up your research game
Statistical Power, Explained: Why 80% Is the Default and How to Reach It
What statistical power actually means, why 80% became the convention, how effect size, alpha, and sample size trade off against each other, and how to run a quick power analysis for a t-test, correlation, or two-proportion comparison without stats software.
The Sample Size Formula, Explained: What Your Calculator Is Actually Doing
A plain-language walkthrough of the sample size formula: what confidence level, margin of error, and population size each do to your number, the finite population correction, and two fully worked examples you can follow with a calculator open.
Likert Scale Examples: 3, 5, 7, and 10 Point Scales You Can Copy
Copyable Likert scale examples for agreement, satisfaction, frequency, importance, and likelihood questions. When to use 5 points versus 7, how to label a neutral midpoint, what reverse-coding is for, and the wording mistakes that skew results.
How Many Survey Respondents Do You Need? Sample Size Made Simple
A plain-language guide to survey sample size for students and researchers: margin of error, confidence level, the reference numbers, a population lookup table, rules of thumb for common analyses, and what to do when you fall short.
How to Run a Market Research Survey Without Hiring an Agency
A 7-step playbook for running a market research survey yourself: define the decision, pick who to ask, size the sample, write clean questions, field it, clean the data, and act on the results.
How to Write Survey Questions: A Practical Guide for Researchers
A practical guide on how to write survey questions that give you clean, usable data. Question types, wording traps to avoid, answer-option design, question order, and pilot testing, with before-and-after examples.
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