Interview Q&A / Data Science
Data Science interview questions
Statistics, pandas, cleaning data and exploratory analysis for analyst and data science roles.
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- What is a weighted average, and when should you use it instead of a simple average?
A weighted average multiplies each value by its importance (weight) and divides by the total weight. Use it when items do not count equally, such as marks with different credit values or averaging group means of unequal size.
BeginnerQuick answer1 min read