Why is it mandatory to clean a data set?
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How can you compute an inverse matrix faster by playing with some computation tricks?
What are the differences between overfitting and underfitting?
You have a bag with 6 marbles. One marble is white. You reach the bag 100 times. After taking out a marble, it is placed back in the bag. What is the probability of drawing a white marble at least once?
What is the central limit theorem and why is it important?
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?
Explain how to merge data frames in R?
Why do you need a for loop? How do you do for loops in python and r?
Why L1 regularizations causes parameter sparsity whereas L2 regularization does not?
What skills do you need to be a data analyst?
Explain why data cleansing is essential and which method you use to maintain clean data?
What skills do I need to be a data scientist?
What is the role of activation function?
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