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Describe the various steps involved while carrying out an analytical project?
Define a sql query? What is the difference between select and update query? How do you use sql in sas, python, r languages?
Do you need a teacher to be a scientist?
How do data scientists code in r?
Explain cluster sampling technique in data science
What functions are required to principal analysis in R?
How do you treat missing values during analysis?
Can you explain k-mean?
What is data science? Also, list the differences between supervised and unsupervised learning.
Given 2 vectors, how will you generate a sorted vector?
Which technique will you use to compare the performance of two back-end engines that generate automatic friend recommendations on Facebook?
What is f test?
How do you take millions of users with 100's of transactions each, amongst 10000's of products and group the users together in a meaningful segments?
Could you draw a comparison between overfitting and underfitting?
You created a predictive model of a quantitative outcome variable using multiple regressions. What are the steps you would follow to validate the model?
