Afraid of numbers? This book was written for you.
You already think in numbers. You compare prices, judge whether a bus is unusually late, and notice when a result seems too good to be true. Quantitative Analysis Made Clear takes those everyday instincts and turns them, step by step, into the skills to analyze real data with confidence.
Written by Zerai Hagos, PhD, an experienced university professor and research supervisor, this book is for students, researchers, and professionals who have been put off by dense formulas and intimidating jargon. Every idea starts with a real-world question, such as a clinic's waiting times, a vaccine trial, or a hospital ward's length of stay. Each is explained in plain language and then worked through by hand, one clear step at a time, so you see exactly where every number comes from.
Inside, you will learn how to:
- Describe data honestly with averages, spread, and charts that tell the truth
- Understand probability, sampling, and why results vary from sample to sample
- Read p-values and confidence intervals correctly, and avoid the most common misinterpretations
- Plan the right sample size so your study is not doomed before it begins
- Run and interpret t-tests, ANOVA, chi-square tests, nonparametric tests, correlation, and simple, multiple, and logistic regression
- Choose the right test for your data with a step-by-step decision guide
- Carry out your analysis in Excel, SPSS, R, or Python, and read the output with confidence
- Report results clearly, and judge other people's research with a critical eye
Built for real learning:
- More than 400 pages, organized in 26 chapters
- Hundreds of fully worked examples, each ending with an "Interpretation in plain words"
- "Common Traps" in every chapter, showing the mistakes that mislead even experienced researchers
- Practice exercises with complete answers
- A glossary, a formula quick reference, statistical tables, and an index
Whether you are writing a thesis, reviewing research, or simply want to stop feeling lost when the numbers appear, this book will take you from anxiety to understanding, and from understanding to confidence.
Stop fearing the numbers. Start making sense of them.
