Which statistical methodology is most commonly used by mathematics software companies to analyze user interaction patterns and improve product features?

Market research in mathematics education and software products relies on sophisticated analytical techniques to understand user needs and behavior patterns. This poll tests your knowledge of how statistical methods are applied in mathematics product development and marketing. Can you identify the correct mathematical approach used by leading companies in the field?

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Markov Chain Monte Carlo (MCMC) simulation
Simple linear regression with t-tests
Chi-square goodness-of-fit test
ANOVA with post-hoc Tukey HSD