Founder of Visual Website Optimizer here. Couple of articles you can refer on math we use: http://visualwebsiteoptimizer.com/split-testing-blog/what-you-reall

Founder of Visual Website Optimizer here. Couple of articles you can refer on math we use: http://visualwebsiteoptimizer.com/split-testing-blog/what-you-really-need-to-know-about-mathematics-of-ab-split-testing/ http://visualwebsiteoptimizer.com/split-testing-blog/what-yo... http://visualwebsiteoptimizer.com/split-testing-blog/ab-testing-significance-calculator-spreadsheet-in-excel/ http://visualwebsiteoptimizer.com/split-testing-blog/ab-test...