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What are some potential flaws in the design of an A/B test that could cause significant differences between the control and variant groups?

Can you propose a method to systematically interpret a string that includes nested parentheses?

Describe a time when you faced a challenge when you were in public.

How do decision trees work, and what are the potential disadvantages to using them?

How would you execute a binary search in code and describe the time complexity? Moreover, can the search be enhanced?

Can you craft a function to evaluate the root mean squared error of two arrays?

Show how you would implement an algorithm to mimic the toss of an X-sided dice with specific probabilities.

For those of us not well-versed in decision trees, could you provide an explanation of bias and variance and how they're pertinent? Additionally, could you share with us which of those two is tougher to deal with: high bias or high variance - and why?

How do your short term goals support your long term goals?

Describe a situation where you took the initiative.