while working on a data set, how can you select important variables? Explain
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What is random forests and how is it different from decision trees?
Which one would you prefer for text analytics python or r?
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 the science of data in simple words?
I have a string “contact@dezyre.com”. Which string function can be used to split the string into two different strings “contact@dezyre” and “com” ?
What exactly does a data scientist do?
What are recommender systems?
Explain about the box cox transformation in regression models?
What is an api?
What is the difference between bayesian estimate and maximum likelihood estimation (mle)?
What is chi square test?
Can you define feature vector?
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