Master Simple Exponential Smoothing for Time Series Forecasting

🧠 Don’t miss out! Get FREE access to my Skool community — packed with resources, tools, and support to help you with Data, Machine Learning, and AI Automations! 📈 https://www.skool.com/data-and-ai-automations-4579 Want to create better forecasts for your time series data? In this hands-on tutorial, you’ll learn how to implement Simple Exponential Smoothing (SES) in Python using Statsmodels. Whether you're forecasting sales, demand, or traffic, this method is a powerful yet easy tool for smooth trend predictions! Code: https://ryanandmattdatascience.com/simple-exponential-smoothing/ 🚀 Hire me for Data Work: https://ryanandmattdatascience.com/data-freelancing/ 👨‍💻 Mentorships: https://ryanandmattdatascience.com/mentorship/ 📧 Email: [email protected] 🌐 Website & Blog: https://ryanandmattdatascience.com/ 🖥️ Discord: https://discord.com/invite/F7dxbvHUhg 📚 *Practice SQL & Python Interview Questions: https://stratascratch.com/?via=ryan 📖 *SQL and Python Courses: https://datacamp.pxf.io/XYD7Qg 🍿 WATCH NEXT Python Time Series Playlist: https://www.youtube.com/playlist?list=PLcQVY5V2UY4LEJM7WxpL-VCeh7m7yD9gb Time Series Decomposition: https://youtu.be/MDAkgkWwtwM Time Series Box Cox: https://youtu.be/xd4zas1VWJw KPSS Test: https://youtu.be/K_TzArMixvA In this video, I break down simple exponential smoothing (SES) for time series forecasting using Python. Simple exponential smoothing is a foundational forecasting method that assigns exponentially decreasing weights to past observations, making it ideal for short-term predictions on data without clear trends or seasonality. We start by covering the key concepts behind simple exponential smoothing, including how the smoothing parameter (Alpha) controls the weight given to recent observations. I explain why a higher Alpha reacts quickly to recent changes while a lower Alpha creates more stable forecasts by giving weight to historical values. Then we dive into a hands-on Python implementation using real Apple stock price data from a Kaggle dataset. I show you exactly how to prepare time series data, implement simple exponential smoothing with the statsmodels library, and create professional visualizations to compare forecasts. We walk through two complete examples: one with a manually set Alpha value of 0.2, and another using automatic optimization to find the best smoothing parameter. By the end of this tutorial, you'll understand when to use simple exponential smoothing, how to choose appropriate Alpha values, and how to implement SES forecasting in Python for real-world datasets. This is the first video in the exponential smoothing series, followed by double exponential smoothing and Holt-Winters methods. TIMESTAMPS 00:00 Introduction to Simple Exponential Smoothing 00:20 Background and Theory 01:20 Types of Exponential Smoothing 01:45 SES Formula Explained 02:04 Understanding Alpha Values 03:00 Choosing the Alpha Parameter 04:01 Python Implementation Setup 05:00 Loading and Preparing Apple Stock Data 06:40 Data Preprocessing Steps 08:10 Plotting the Stock Price Data 10:00 Manual Smoothing Level (Alpha = 0.2) 11:40 Automatic Alpha Selection 12:40 Creating Forecast Variables 13:40 Plotting Both Forecasts 17:40 Analyzing the Results 18:40 Key Takeaways and Recap OTHER SOCIALS: Ryan’s LinkedIn: https://www.linkedin.com/in/ryan-p-nolan/ Matt’s LinkedIn: https://www.linkedin.com/in/matt-payne-ceo/ Twitter/X: https://x.com/RyanMattDS Who is Ryan Ryan is a Data Scientist at a fintech company, where he focuses on fraud prevention in underwriting and risk. Before that, he worked as a Data Analyst at a tax software company. He holds a degree in Electrical Engineering from UCF. Who is Matt Matt is the founder of Width.ai, an AI and Machine Learning agency. Before starting his own company, he was a Machine Learning Engineer at Capital One. *This is an affiliate program. We receive a small portion of the final sale at no extra cost to you.