IT Career Guides & Free Resources
Expert roadmaps, tutorials, salary guides and interview prep across Data Science, Generative AI, Python, Cloud & Analytics — written by GloryTecks trainers in Hyderabad.
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Time Series Forecasting: A Beginner-Friendly Introduction
A beginner-friendly introduction to time series forecasting on 36 years of real monthly CO2 measurements: what trend and seasonality are, why simple benchmark methods matter, how Holt-Winters combines both patterns, and how to test forecasts honestly by repeatedly forecasting the next year from past data only.
Forecasting in Excel: Simple Methods That Work
Forecasting in Excel with simple methods that work: the formula for each, from repeating last month to a moving average, FORECAST.LINEAR, a trend times seasonal index and FORECAST.ETS, plus an honest test on a real monthly series where the right simple method cut the error from over 40% to 12%.