AJ Lacubtan
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Writing

Field Notes

Writing about uncertainty, evidence, and applied data work.

Short essays and technical walkthroughs on Bayesian modeling, forecasting, visualization, research design, and quantitative systems. The goal is to make statistical thinking useful without hiding the assumptions.

Latest Essay

Forecasting Uncertainty: Why Prediction Intervals Matter

A Bayesian walkthrough using the classic AirPassengers dataset to show why forecasts should be treated as distributions, not single-number guesses.

Bayesian modeling Forecasting Prediction intervals

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uncertainty

forecast horizon

Bayesian Modeling

Priors, likelihoods, posterior predictive checks, and practical uncertainty communication.

Quantitative Research

Study design, validation, measurement, and translating statistical results into decisions.

Data Visualization

Charts as analytical tools: structure, comparison, uncertainty, and visual storytelling.

Essay Index

All writing entries, newest first.

Forecasting Uncertainty: Why Prediction Intervals Matter

bayesian modeling
forecasting
uncertainty
time series

A practical introduction to prediction intervals using a Bayesian trend-seasonal model on the classic AirPassengers dataset.

May 21, 2026
AJ Jhones Lacubtan
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© 2026 AJ Jhones Lacubtan

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