Interview Q&A / Data Science
Data Science interview questions
Statistics, pandas, cleaning data and exploratory analysis for analyst and data science roles.
Prefer rapid revision? Practise Data Science short interview answers →
- What is the difference between mean, median and mode, and when is the median better?
The mean is the sum divided by the count, the median is the middle value after sorting, and the mode is the most frequent value. Use the median when the data is skewed or has outliers, like salaries, because one very large value pulls the mean up but barely moves the median.
BeginnerIn-depth4 min read