Alan Matthew - DEV Community

Alan Matthew

Oct 18

One-Way ANOVA Explained: The F-Test, a Worked Example, Tukey HSD, and Code in Python/R

#statistics #python #datascience #tutorial

8 min read

Alan Matthew

Oct 18

Finding Outliers with the IQR Method: Formula, Quartile Gotchas, Code in Python/R/SQL, and a Free Calculator

#statistics #python #datascience #tutorial

11 min read

Alan Matthew

Oct 18

Cronbach's Alpha Explained: Formula, Worked Example, Python/R Code, and a Free Calculator

#statistics #python #datascience #tutorial

5 min read

Alan Matthew

Oct 18

Confidence Intervals for a Mean: z vs t, a Worked Example, and a Free Calculator

#statistics #datascience #python #beginners

4 min read

Alan Matthew

Oct 17

Build an Accounts Receivable Turnover and DSO Calculator in JavaScript (Plus the Quarterly-Data Bug)

#javascript #webdev #tutorial #fintech

11 min read

Alan Matthew

Oct 17

Build a GPA Calculator in JavaScript (and Avoid the Floating-Point Bugs Everyone Hits)

#javascript #webdev #tutorial #beginners

11 min read

Alan Matthew

Oct 16

Truth Tables for Developers: Build One in Python (and Verify Boolean Logic Fast)

#computerscience #beginners #logic #python

3 min read

Alan Matthew

Oct 14

How to Pass an Online Class When You're Behind, Overwhelmed, or Working Full-Time

#productivity #learning #career #beginners

4 min read

Alan Matthew

Oct 13

Structuring a Service Page for Answer Engines: 5 Patterns That Work

#seo #webdev #ai #html

2 min read

Alan Matthew

Oct 11

Population Growth Sandbox: 6 Experiments That Show How Carrying Capacity Really Works

#biology #ecology #python #beginners

12 min read

Alan Matthew

Oct 11

Debugging PCR Like a Developer: 7 Master Mix "Bugs" (and a Free Calculator to Prevent Them)

#biology #beginners #science #tutorial

2 min read

Alan Matthew

Oct 11

Are Your Dice Loaded? Chi-Square Explained Through Mendel's Peas (+ a Free Calculator)

#statistics #biology #beginners #python

2 min read

Alan Matthew

Oct 11

5 Punnett Square Mistakes That Cost Students Points (and a Free Calculator to Catch Them)

#biology #education #students #beginners

2 min read

Alan Matthew

Oct 11

How AP Biology Scoring Works (Plus a Free Calculator to Estimate Your 1-5 Score)

#education #students #learning #tutorial

4 min read

Alan Matthew

Oct 10

Why Running Three t-Tests Is a Bug (and How One-Way ANOVA Fixes It)

#statistics #python #datascience #tutorial

16 min read

Alan Matthew

Oct 10

Finding Outliers with the IQR Method: Tukey Fences, Quartile Gotchas, and Code

#statistics #python #datascience #tutorial

9 min read

Alan Matthew

Oct 10

Cronbach’s Alpha Explained: Formula, Worked Example, and Python Code

#statistics #python #datascience #beginners

7 min read

Alan Matthew

Oct 10

How to Calculate a Confidence Interval for the Mean (z vs t, With a Worked Example)

#statistics #python #datascience #beginners

3 min read

Alan Matthew

Oct 9

Your Invoice Table Is a Cash-Flow Dashboard: Computing AR Turnover and DSO in SQL + JS

#sql #javascript #webdev #tutorial

7 min read

Alan Matthew

Oct 9

The One Equation Every Dev Building Money Features Should Know (With Code)

#webdev #javascript #beginners #tutorial

8 min read

Alan Matthew

Oct 1

Accounts Receivable Turnover in Code: The Formula, the Gotchas, and a Free Calculator

#webdev #javascript #tutorial #finance

3 min read

Alan Matthew

Sep 30

Build a Truth Table Generator in Python (Parser, Evaluator, Tautology Checker)

#python #algorithms #beginners #logic

4 min read

Alan Matthew

Sep 30

Balancing Chemical Equations Is Just Linear Algebra (Here's the Code)

#python #algorithms #math #webdev

2 min read

Alan Matthew

Sep 28

Probation Calculator for Academic Standing & GPA Recovery

9 min read

Alan Matthew

Sep 28

Free APA, MLA, Chicago Bibliography Maker

#webdev #programming #productivity #career

9 min read

Alan Matthew

Sep 28

The Silent Crisis: Detecting and Preventing Student Burnout Before It's Too Late

#ai #programming #productivity #tutorial

7 min read

Alan Matthew

Sep 28

College Workload & Study Hours Calculator

#webdev #programming #ai #tutorial

5 min read

Alan Matthew

Sep 28

Technical Deep Dive: Building a Multi-Mode Academic Grade Engine with JavaScript & Weighted Algorithms

#ai #webdev #programming #productivity

4 min read

Alan Matthew

Sep 23

Hardy-Weinberg Equilibrium Explained: The Probability Math Behind Gene Pools 🧬📊

#ai #webdev #productivity #javascript

2 min read

Alan Matthew

Sep 23

System Limits & Infrastructure Crash Course: The Math Behind Carrying Capacity ($K$) 📈🌐

#ai #programming #webdev #productivity

2 min read

Alan Matthew

Sep 23

Why PCR Master Mixing is Just Batch Processing (And How to Eliminate Off-by-One Errors) 🧬🧪

#ai #programming #webdev #productivity

2 min read

Alan Matthew

Sep 23

Why Your A/B Test Results Might Be a Lie: How to Audit Categorical Data 📊🧪

#datascience #analytics #webdev #python

2 min read

Alan Matthew

Sep 23

Why Genetics is Just Combinatorics (And How to Algorithmitize the Punnett Square) 🧬💻

#algorithms #python #webdev #datascience

2 min read

Alan Matthew

Sep 22

Stop Using Standard Deviation for Anomaly Detection: The IQR Rule Explained 🧹

2 min read

Alan Matthew

Sep 22

Case Study: How a Broken Survey Ruined Our Product Roadmap (And How We Fixed It) 📐

#ai #programming #webdev

3 min read

Alan Matthew

Sep 22

Stop Guessing Sample Sizes & Margins of Error: The No-BS Guide to Confidence Intervals 📊 🔥

3 min read

Alan Matthew

Sep 21

I Built an Interactive Accounting Equation Calculator with Next.js & Tailwind (Here's How It Works)

#webdev #javascript #react #programming

3 min read

Alan Matthew

Sep 20

How I Built a Reactive Percent Yield Calculator for Chemistry & Lab Devs 🧪⚡

#showdev #javascript #webdev #chemistry

3 min read

Alan Matthew

Sep 20

How I Built a Reactive Limiting Reactant Calculator for Chemistry & Science Devs 🧪⚡

#showdev #javascript #webdev #chemistry

3 min read

Alan Matthew

Sep 20

How I Built a Reactive Homework Overload Calculator for Stressed Students 📚⚡

#showdev #javascript #webdev #productivity

3 min read

Alan Matthew

Sep 20

How I Built a Reactive Formal Charge Calculator for Chemistry & Science Devs 🧪⚡

#showdev #javascript #webdev #chemistry

3 min read

Alan Matthew

Sep 20

How I Built a 3D Disk Method Calculator That Doesn't Suck 🍩⚡

#showdev #javascript #webdev #math

3 min read

Alan Matthew

Sep 20

How I Built a Reactive 3D Volume of Revolution Calculator with Calculus Logic in Pure Web Tech 📐⚡

#showdev #javascript #webdev #math

3 min read

Alan Matthew

Sep 20

Building a Reactive Hardy-Weinberg Equilibrium Calculator in Pure JS 🧬⚡

#showdev #javascript #webdev #math

3 min read

Alan Matthew

Sep 20

How I Built a Zero-Latency APGAR Score Calculator for Healthcare & Nursing Students 👶⚡

#showdev #webdev #javascript #frontend

2 min read

Alan Matthew

Sep 20

Anion Gap Calculator: Comprehensive Clinical Electrolyte Analysis, Acid-Base Interpretation, and Diagnostic Decision-Making

#webdev #programming #productivity

13 min read

Alan Matthew

Sep 11

Building an Interactive Break-Even & CVP Analytics Engine in Modern TypeScript :

#webdev #programming #productivity #ai

1

2 min read

Alan Matthew

Sep 11

Building an Accounts Receivable & DSO Analytics Engine in Modern TypeScript

#ai #webdev #typescript #productivity

4 min read

Alan Matthew

Sep 11

How I Built an Accounting Engine in Pure TypeScript (And What Broke Along the Way)

#webdev #ai #accounting #javascript

1

4 min read

Alan Matthew

Sep 10

Punnett Square Simulator: Modeling Mendelian Inheritance and Hardy-Weinberg Equilibrium in JavaScript

#ai #webdev #programming #productivity

1 min read

Alan Matthew

Sep 10

Financial Amortization & NPV Calculator

#javascript #fintech #webdev #math

1

4 min read

Alan Matthew

Sep 10

Building an AST-Driven Propositional Truth Table Generator in JavaScript

#ai #programming #productivity #tutorial

1

1 min read

Alan Matthew

Sep 10

Balancing Chemical Equations with Linear Algebra in Pure JavaScript

#ai #webdev #programming #javascript

1

1 min read

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