Statistics

How can you tell if a given coin is biased?

Data Scientist

Google

Takeaway

Blind

Medallia

PagerDuty

MongoDB

Did you come across this question in an interview?

  • Is there a specific method you use to detect if a coin is unevenly weighted?
  • In your opinion, what are the telltale signs of an imbalanced coin?
  • Can you walk me through the process of determining the bias of a coin?
  • How would you differentiate between a fair coin and one that has a bias?
  • Have you ever encountered a coin that you suspected to be biased? If so, what gave it away?
  • What factors do you consider when assessing the fairness of a coin?
  • Is there a way to confirm if a coin is biased without testing it in a large sample size?
  • What warning signs do you observe when examining a coin for bias?
  • Do you believe there are any innate properties of a coin that might make it more susceptible to bias?
  • What indications would you look for to identify a potentially biased coin?
  • How can you tell if a given coin is biased?
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Interview question asked to Data Scientists interviewing at Akamai, Shopee, Google and others: How can you tell if a given coin is biased?.