Miroslav Kalal contributed to the scrumdojo/quizmaster repository by delivering two features focused on enhancing quiz analytics and user experience. He introduced a new timedOut data field to the stats model and updated the UI to display detailed timeout statistics, supporting more granular analysis of quiz attempts. Using React, TypeScript, and CSS, he refined the Quiz Statistics interface with improved readability, bold headers, and better column alignment, addressing several UI presentation issues. His work spanned data modeling, frontend implementation, and testing with Cucumber, resulting in a more consistent analytics experience and supporting data-driven decision making for the product.