SkillCert vs Probability Distribution Lab

【About This App】 Supports over 200 certifications and qualifications! Compete in real-time battles and weekly ranked matches using AI-generated exam questions based on official certification names and syllabi. Connect with fellow learners through SNS-style features and chat to expand your learning community. 【Features】 • Real-Time Battles: Compete online against other users using certification knowledge. Winners are determined by both accuracy and response speed. • Ranked Matches: Weekly seasonal rankings! Visualize your ranking and deviation score through competitive matches. • Practice Mode: Randomly selects 10 questions from the exam database. Ask AI about topics you do not understand. Users can vote questions as Good/Bad, and questions receiving many Bad votes are automatically removed every week. • Flashcards / Glossary • Community Features: Stay motivated and connect with like-minded learners through timelines (SNS), direct messaging, and chat features. • AI Diagnostic System: Automatically identifies weak areas and suggests the next best study actions to minimize learning time. 【Terms of Service / Privacy Policy】 Terms of Service: https://scba-ai.com/en/terms Privacy Policy: https://scba-ai.com/en/privacy

Understand probability distributions from the first equation. Probability Distribution Lab helps you study derivations, transformations, and proofs of the mean and variance one line at a time, inside the app. No equation entry is required: tap to reveal the next step and its explanation, then record your understanding. FOLLOW THE REASONING Start with the initial equation and reveal each transformation in sequence. Mark difficult steps for review. Set familiar transformations to be skipped next time, and reveal skipped sections again when needed. DERIVE THE MEAN AND VARIANCE Study the reasoning behind the formulas, not only the final result. After a lesson, assess whether you can derive it without an explanation or understand it with a hint. CONNECT FORMULAS TO SHAPES AND USES Explore each distribution's graph, parameters, and concrete examples. Use the relationship map to study sums, limits, and transformations together with their conditions. REVISIT THE MATHEMATICS YOU NEED Refer to prerequisite concepts while studying a derivation. Save difficult steps and self-assessed understanding to organize your next review. Progress indicators reflect your own assessment; they do not guarantee exam results. FREE EDITION AND FULL ACCESS The free edition includes four distributions: Bernoulli, Binomial, Poisson, and Normal. Banner ads are shown in the free edition. Full Access is a one-time in-app purchase that unlocks all 15 distributions and their related derivations and proofs, and removes banner ads. There is no subscription. Restore purchases is available. Available in Japanese and English. No app account or login is required.