Outlier Detection: IQR and Z-Score (Easy Way) in Data Scientist
Outliers
Outliers can be errors or real rare events. I decide based on domain.
- IQR: good for skewed data
- Z-score: works well for normal-ish data
Related: EDA Checklist
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Outlier Detection: IQR and Z-Score (Easy Way)
Data Scientist
9 min min read
Updated: Mar 05, 2026
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2 / 5
📑 Table of Contents
Introduction to Data Science
Mathematics for Data Science
Statistics & Probability Deep Dive
Python for Data Science
- 16 Python Setup for Data Science: VS Code, Jupyter, and Environments
- 17 Pandas Basics: Read CSV, Filter, GroupBy (What I Use Most)
- 18 NumPy Basics: Arrays and Broadcasting Explained
- 19 Data Visualization: Matplotlib Quick Starter (Student Friendly)
- 20 Python Clean Code for Data Projects: Functions, Files, and Reuse
Data Cleaning & Exploratory Data Analysis (EDA)
Supervised Machine Learning
- 26 Supervised Learning: Regression vs Classification (Simple)
- 27 Train-Test Split and Cross-Validation (Beginner Friendly)
- 28 Linear Regression: Intuition, Metrics, and Common Pitfalls
- 29 Logistic Regression Simplified: Probability to Decision
- 30 Classification Metrics: Precision, Recall, F1 (No Confusion)
Unsupervised Machine Learning
Feature Engineering & Model Optimization
Deep Learning Fundamentals
Natural Language Processing for Data Scientists
Computer Vision for Data Scientists
Time Series Analysis & Forecasting
Model Deployment & MLOps Basics
Business Case Studies & Real-World Projects
- 66 Business Case Studies in Data Science: How I Approach Real Problems
- 67 Recommendation System Case Study: Netflix/Amazon Style (Real World)
- 68 Fraud Detection Case Study: How ML Finds Suspicious Transactions
- 69 Customer Churn Prediction Case Study: Retaining Users with Data
- 70 Demand Forecasting Case Study: Retail Sales Prediction (Practical)
Advanced Data Science & Interview Preparation
- 71 Advanced Data Science Interview Plan: What to Study in 14 Days
- 72 SQL Interview Questions for Data Scientists (Advanced Set)
- 73 Machine Learning Interview Questions (Concept + Practical)
- 74 ML System Design Interview Basics: From Notebook to Production
- 75 How I Explain My Data Science Projects in Interviews (Winning Format)
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