Data Science Portfolio · Feature #8

The product leader who speaks fluent data.

Exploratory data analysis and machine learning projects from the Johns Hopkins / Coursera Data Science specialization — built in R, published on RPubs and GitHub. Because the best product instincts are grounded in empirical evidence.

📊Johns Hopkins Data Science Specialization · 10-course track · Coursera
Imputing Fitbit Steps Data

Reproducible Research · R Markdown

Imputing Fitbit Steps Data

Analysis of personal activity monitoring data — computing daily step counts and imputing missing values using mean substitution. Explores weekday vs. weekend activity patterns.

RData CleaningImputationknitr
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Health & Physical Costs of US Natural Disasters

NOAA Storm Data · R · Data Analysis

Health & Physical Costs of US Natural Disasters

Analysis of NOAA's 60-year storm event database to identify which natural disasters cause the greatest human casualties and economic damage. Tornadoes dominate injuries; floods dominate property loss.

RNOAAdplyrggplot2
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Recognizing Exercise with Mobile Data

Machine Learning · Practical ML

Recognizing Exercise with Mobile Data

Classification model predicting exercise form from accelerometer data. Compared Random Forest, GBM, and LDA — Random Forest achieved 99.4% accuracy on the held-out test set via cross-validation.

RRandom ForestcaretML
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Pokémon Types by Attack vs. Defense

Data Visualization · R / RPubs

Pokémon Types by Attack vs. Defense

Exploratory visualization of all Pokémon base stats — mapping attack power against defensive capability across all 18 elemental types. Built as an introduction to plotly and interactive data storytelling.

RplotlyData VizEDA
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Realtime Map of NBC Jobs

Geospatial · Leaflet · R

Realtime Map of NBC Jobs

Leaflet-powered interactive map pulling NBC Universal job postings and plotting them geographically across the US. A proof-of-concept for real-time geospatial job market intelligence — built before this was table stakes.

RLeafletGeospatialAPI
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