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How does PCA work?

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Did you come across this question in an interview?

  • How does PCA work?
  • What are the steps involved in performing PCA?
  • How is data transformed through Principal Component Analysis?
  • What is the methodology behind PCA in reducing dimensionality?
  • Can you describe the principal mechanism by which PCA operates?
  • How does PCA achieve dimensionality reduction in datasets?
  • What's the workflow of PCA in simplifying data?
  • How does PCA assist in uncovering patterns in data?
  • Can you walk me through how Principal Component Analysis functions?
  • How does PCA dissect and condense the feature space?
  • Can you explain the process of Principal Component Analysis?
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Interview question asked to Data Scientists interviewing at Monzo, Juniper Networks, Expedia and others: How does PCA work?.