# The Quantitative Quill > Quantify and Analyze Observations Around You ## Posts - [Logistic Regression in R for Wafer Defect Prediction](https://quantitativequill.xyz/index.php/2026/09/11/logistic-regression-r-wafer-defect-prediction/): Logistic regression in R on a simulated wafer defect dataset: odds ratios, a fitted probability curve, ROC analysis, and why the 0.5 cutoff misleads. - [Process Capability Analysis (Cpk) in R for Semiconductor Manufacturing](https://quantitativequill.xyz/index.php/2026/06/05/process-capability-analysis-cpk-in-r-for-semiconductor-manufacturing/): Process capability analysis (Cp and Cpk) using the qcc package in R. Building on SPC control charts to quantify whether your semiconductor process can consistently meet specification limits. - [SPC Charts in R for Semiconductor Process Monitoring](https://quantitativequill.xyz/index.php/2026/05/13/spc-charts-in-r-for-semiconductor-process-monitoring/): Learn to build X-bar and R control charts in R for monitoring thin film deposition thickness. Includes worked R code with synthetic LPCVD data. - [Predicting Diabetes: Comparing Logistic Regression, SVMs, and Random Forests](https://quantitativequill.xyz/index.php/2025/01/01/predicting-diabetes-comparing-logistic-regression-svms-and-random-forests/): While exploring Kaggle’s vast data science resources, I discovered an intriguing diabetes dataset and decided to develop a predictive model. The dataset structure is elegantly simple, featuring 8 independent variables and a target variable called Outcome, which identifies the presence or absence of diabetes. My objective is to create a robust model that can accurately predict diabetes based on these variables. Dataset Overview This comprehensive medical dataset contains diagnostic measurements specifically collected for diabetes prediction based on various health indicators. It encompasses 768 female patient records, with each record containing 8 distinct health parameters. The Outcome variable serves as the binary […] - [Are US Police Trigger Happy?](https://quantitativequill.xyz/index.php/2024/12/25/are-us-police-trigger-happy/): Recently, I stumbled upon a Washington Post article discussing the statistics of police-involved shootings and fatalities over recent years. The article referenced a comprehensive dataset, which I managed to download before encountering the paywall. This dataset documented all fatal police shootings spanning roughly a decade. While the data extended into 2024, I’ve excluded those entries from my analysis since the year is still ongoing. The dataset contained several key parameters: The dataset revealed a staggering 9893 cases – an alarmingly high number of individuals who lost their lives without due process, regardless of their alleged criminal activities. Each number represents a […] - [Spreadsheets: Common man's programming tool](https://quantitativequill.xyz/index.php/2024/06/15/spreadsheets-common-mans-programming-tool/): I remember sitting in my computer science class about two decades ago and my teacher teaching us how to print “Hello World”. I never became a computer scientist – nor did I become a professional programmer. But I did come to appreciate how useful programming is for most professions. As an experimental Materials Scientist, I use programming so often to manipulate data, to analyze data, to predict the best possible set of experiments to run – and all the while I often wonder, why the common student is taught the dry programming of Hello World, that comes with C or C++ […] ## Pages - [About](https://quantitativequill.xyz/index.php/about/): My name is Qanit Takmeel. I am a Materials Scientist by profession and presently, I work as a Sr. Member of Technical Staff, Module Process Engineering, at Applied Materials. I obtained my PhD in Materials Science and Engineering from the University of Florida in 2016. I worked extensively on catalysts for direct methanol fuel cells, but as a side project, ended up working on MIMCAPS (Metal-Insulator-Metal Capacitors). Why Quantitative Quill? I love numbers. Hence Quantitative. I like writing and much of this blog will have text on it – hence Quill. I am fully aware of the fact that I am […] ## Optional - [Agent (MCP protocol)](websites-agents.hostinger.com/quantitativequill.xyz/mcp) [comment]: # (Generated by Hostinger Tools Plugin)