Can you explain k-mean?
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A box has 12 red cards and 12 black cards. Another box has 24 red cards and 24 black cards. You want to draw two cards at random from one of the two boxes, which box has a higher probability of getting cards of same colour and why?
Can you define power analysis?
Explain types of statistical data?
What is data science? Also, list the differences between supervised and unsupervised learning.
What is cluster sampling?
What is the central limit theorem? How is a normal distribution different from chi square distribution?
How do you treat multicollinearity and heteroscedasticity in regression? Name some packages in r and python for building regression models.
What are Principal components?
Explain the decision tree algorithm, and how is it different from the random forest algorithm?
How will you drop variables using indices in a data frame?
Can you explain data preparation?
What is data scientist?
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