What are the different performance metrics for evaluating Uber services?
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How does data cleaning plays a vital role in the analysis?
What is nosql? Name some examples of nosql databases. What is a key value store? What is column storage? What is a document database?
Define a sql query? What is the difference between select and update query?
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 does data cleaning plays a vital role in analysis?
What do you understand by Ordinary Least Squares Linear Regression?
Explain Data Science Vs Machine Learning?
Pick up a coin C1 given C1+C2 with probability of trials p (h1) =.7, p (h2) =.6 and doing 10 trials. And what is the probability that the given coin you picked is C1 given you have 7 heads and 3 tails?
What are the various types of selection bias?
How and by what methods data visualizations can be effectively used?
Now companies are heavily investing their money and time to make the dashboards. Why?
What are the principal components?
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