About the Data Science Interview Questions category


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343

January 4, 2023

What is Levenshtein distance and how is it useful?


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466

February 13, 2023

What is pruning in a decision tree algorithm?


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314

January 9, 2023

What is the ROC curve?


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273

January 9, 2023

What do you understand about true positive rate and falsepositive rate?


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309

January 9, 2023

How can you calculate accuracy using a confusion matrix?


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306

January 9, 2023

What are recommender systems?


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296

January 9, 2023

Differentiate between univariate, bivariate, and multivariate analysis


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342

January 9, 2023

What is the difference among UNION, MINUS and INTERSECT in SQL?


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289

January 9, 2023

What is the difference between INNER JOIN, OUTER JOIN, FULL OUTER JOIN?


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376

January 9, 2023

What are the difference between Clustered and a Nonclustered index?


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301

January 9, 2023

What is the difference between Data Definition Language (DDL) and Data Manipulation Language (DML)?


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377

January 9, 2023

What is correlation and covariance in statistics?


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301

January 9, 2023

What is Entropy and Information Gain in decision tree algorithm?


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325

January 9, 2023

What is the difference between Type I Error & Type II Error?


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308

January 9, 2023

Can you explain the concept of biasvariance tradeoff in machine learning and the importance of considering it?


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353

January 9, 2023

What are some strategies for dealing with missing data, and which imputation methods do you suggest using?


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376

January 9, 2023

Can dimensionality reduction improve the performance of an SVM, and if so, under what circumstances?


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303

January 9, 2023

What are some methods for evaluating the goodness of fit of a regression model?


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399

January 9, 2023

Why is mean square error a bad measure of model performance? What would you suggest instead?


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276

January 9, 2023

What is principal component analysis? Explain the sort of problems you would use PCA for


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278

January 9, 2023

When would you use random forests Vs SVM and why?


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348

January 9, 2023

Explain what precision and recall are


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338

January 9, 2023

What is a model ensembling?


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292

January 6, 2023

What is a hyperparameter tuning?


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280

January 6, 2023

What is the difference between batch and online learning?


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326

January 6, 2023

What is a support vector machine (SVM)?


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336

January 6, 2023

What is the curse of dimensionality?


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324

January 6, 2023

State and describe the different types of SQL joins


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324

January 5, 2023

What is the difference between UNION and UNION ALL?


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342

January 5, 2023
