Why do you need a for loop? How do you do for loops in python and r?
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Can you define analytics?
What is nosql? Name some examples of nosql databases. What is a key value store? What is column storage? What is a document database?
Explain while working on a data set, how do you select important variables?
You can roll a dice three times. You will be given $X where X is the highest roll you get. You can choose to stop rolling at any time (example, if you roll a 6 on the first roll, you can stop). What is your expected pay-out?
What is difference between sas, r and python programming?
What are outlier values?
Define a sql query? What is the difference between select and update query? How do you use sql in sas, python, r languages?
What do you mean by the term linear regression?
What is a linear regression in data science?
What are recommender systems?
What is the difference between bayesian estimate and maximum likelihood estimation (mle)?
What is meant by logistic regression?