What are apis used for?
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Among python and r, which one is generally preferred for text analytics?
What is random forests?
How is true positive rate and recall related?
Explain the difference between an analyst and a data scientist?
How do you treat multicollinearity and heteroscedasticity in regression? Name some packages in r and python for building regression models.
Print the elements of a matrix in zig-zag manner.
You are creating a report for user content uploads every month and observe a sudden increase in the number of upload for the month of November. The increase in uploads is particularly in image uploads. What do you think will be the cause for this and how will you test this sudden spike?
Explain how to operate on file and directory?
A test has a true positive rate of 100% and a false-positive rate of 5%. There is a population with a 1/1000 rate of having the condition the test identifies. Considering a positive test, what is the probability of having that condition?
What are eigenvalue and eigenvector?
What is cluster sampling?
What is the job description for a data scientist?
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