What is cart and chaid? How is bagging different from boosting?


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State the difference between the expected value and mean value?

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Name some kinds of graphs and explain how you would build them in python or r.

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What prior subject is required to become data analyst?

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How do you treat multicollinearity and heteroscedasticity in regression?

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What does the future hold for data scientists?

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Explain the difference between a validation set and a test set?

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Do you need a teacher to be a scientist?

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What is t test?

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What is market basket analysis?

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What do you understand by l1 and l2 regularization methods?

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How is true positive rate and recall related?

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Can you explain difference between data modeling and database design?

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