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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Outlier Detection for Analysts: Methods and Tools
Outlier detection for analysts, with four standard methods run on the same 19,773 real orders: why they flag anywhere from 53 to 1,797 orders, which suits skewed business data, how a log scale reveals suspiciously small orders, what the biggest outliers turned out to be, and when to keep, fix, cap or exclude.
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%.
Python String Methods Every Developer Should Know
The string methods behind most real text work in Python, grouped by job (cleaning, splitting and joining, searching, comparing, checking) with the traps: strip removing characters rather than a suffix, split() versus split(' '), casefold, and why isdigit accepts characters int() rejects.