Explain the goal of a/b testing?
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There are 8 identical balls and only one of the ball is slightly heavier than the others. You are given a balance scale to find the heavier ball. What is the least number of times you have to use the balance scale to find the heavier ball?
Which is the standard data missing marker used in pandas?
while working on a data set, how can you select important variables? Explain
What is churn? How would it help predict and control churn for a customer?
What cross validation technique would you use on time series data set? Is it k-fold or loocv?
What is data scientist?
What is an Eigenvalue and Eigenvector?
How is data modeling different from database design?
You have 2 dices. What is the probability of getting at least one 4? Also find out the probability of getting at least one 4 if you have n dices.
How long does it take to become a data scientist?
Define analytics?
What is a document database?