Explain the difference between a test set and a validation set?
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How to understand the problems faced during data analysis?
Write the formula to calculate r-square?
In any 15-minute interval, there is a 20% probability that you will see at least one shooting star. What is the probability that you see at least one shooting star in the period of an hour?
What is a document database?
Explain principal components analysis with equations.
How to determine the number of clusters in k-means clustering algorithm?
Discuss 'naive' in a naive bayes algorithm?
Can you explain data munging or data wrangling?
What is association analysis?
What are the roles and responsibilities of a data scientist?
A stranger uses a search engine to find something and you do not know anything about the person. How will you design an algorithm to determine what the stranger is looking for just after he/she types few characters in the search box?
What do you understand by the job description of data scientist?
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