Evan Miller: Sample size
Estimate how many people each variation needs before you run an A/B test.
Open sample size calculatorWorth using.
Worth learning.
Tools, courses, and books I recommend for building products, growing businesses, and learning something new.
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Evan Miller: Chi-squared test
Compare success rates across two groups to check for a statistically significant difference.
Open chi-squared testMotionSites AI
Find website inspiration and ready-to-use prompts for bringing a page idea to life.
Visit MotionSites AIElevenLabs
Turn a script into a voiceover and explore AI audio for content and creative projects.
Visit ElevenLabsHiggsfield
Create AI images and videos to explore visual ideas and produce creative content.
Visit HiggsfieldVisual Studio Code
A code editor for turning ideas into working projects, with extensions to fit your workflow.
Visit Visual Studio CodeClaude
Work through ideas, refine your writing, and get help building with an AI collaborator.
Get ClaudeCodex
Get help writing, reviewing, and improving code as you take a project from idea to working product.
Explore CodexPostHog
Understand how people use your product with analytics, session replays, and experiments.
Visit PostHogSupabase
Build your app’s backend with a Postgres database, authentication, and file storage.
Visit SupabaseHightouch
Bring customer data into your marketing tools to build audiences and personalize campaigns.
Visit HightouchReally Good Emails
Browse real email examples for ideas on layout, copy, and lifecycle campaigns.
Visit Really Good EmailsGoogle Postmaster Tools
Monitor email performance and sender reputation to understand delivery to Gmail.
Visit Google Postmaster ToolsYahoo Sender Hub
Check Yahoo’s sender guidance and tools to understand and improve email delivery.
Visit Yahoo Sender HubGoDaddy
Find a domain for your project and manage the settings that connect it to your site.
Visit GoDaddyCustomer.io
Use customer behavior to trigger messages and build automated lifecycle journeys.
Visit Customer.ioSlackmojis
Custom emojis for giving your Slack conversations a little more personality.
Visit SlackmojisHubSpot Academy
Build your marketing foundations, from email and inbound to content and automation.
Explore coursesAnthropic Academy
Learn to work more effectively with AI and put Claude to use in your day-to-day work.
Explore coursesReforge
Go deeper on growth strategy, product, and the decisions behind building a business.
Explore coursesUdacity
Build technical skills through hands-on projects in data, programming, and AI.
Explore coursesGoogle Career Certificates
Get a structured start in data analytics, digital marketing, UX design, and more.
Explore certificatesCSSC: Six Sigma White Belt
Learn the foundations of Six Sigma, including its methods, history, and team roles, then explore White Belt certification.
Explore certificationW3Schools: SQL
Learn to query and work with data using SQL, with examples and exercises you can try as you go.
Learn SQLW3Schools: HTML
Learn how web pages are structured with HTML, using examples and exercises to practice the basics.
Learn HTMLPropaganda
Explore how public opinion is shaped through media, persuasion, and public relations.
View on AmazonThe 4-Hour Workweek
Rethink how you work, delegate, and design a life with more control over your time.
View on AmazonContagious
Understand why people share ideas and products, and what helps word of mouth spread.
View on AmazonThe First 90 Days
Navigate a new role with a plan for learning, building relationships, and earning early wins.
View on AmazonGood to Great
Examine the leadership, discipline, and focus behind companies that made the leap to lasting performance.
View on AmazonCollege (Un)bound
Question how higher education works and explore what its changing future means for students.
View on AmazonAtomic Habits
Build better routines by making small changes to your habits, environment, and daily systems.
View on AmazonThe Creative Act: A Way of Being
Explore creativity as a daily practice of paying attention, staying open, and making things.
View on AmazonModern Man in Search of a Soul
Explore Jung’s essays on dreams, psychology, spirituality, and the search for meaning.
View on AmazonThe Tipping Point
Explore how small shifts in people, messages, and context can help ideas spread.
View on AmazonThe 4-Hour Body
Explore Ferriss’s experiments with fitness, food, sleep, and physical performance.
View on AmazonRich Dad Poor Dad
Explore contrasting perspectives on money, work, assets, and financial education.
View on AmazonSalt, Fat, Acid, Heat
Understand four core elements of cooking and how to use them with more confidence.
View on AmazonOutliers
Look beyond individual talent to explore how opportunity, timing, and culture shape success.
View on Amazon