About the Data Science Interview Questions category


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178

January 4, 2023

What is Levenshtein distance and how is it useful?


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267

February 13, 2023

What is pruning in a decision tree algorithm?


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166

January 9, 2023

What is the ROC curve?


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156

January 9, 2023

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


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182

January 9, 2023

How can you calculate accuracy using a confusion matrix?


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168

January 9, 2023

What are recommender systems?


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169

January 9, 2023

Differentiate between univariate, bivariate, and multivariate analysis


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200

January 9, 2023

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


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161

January 9, 2023

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


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186

January 9, 2023

What are the difference between Clustered and a Nonclustered index?


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163

January 9, 2023

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


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201

January 9, 2023

What is correlation and covariance in statistics?


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169

January 9, 2023

What is Entropy and Information Gain in decision tree algorithm?


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172

January 9, 2023

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


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179

January 9, 2023

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


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177

January 9, 2023

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


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191

January 9, 2023

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


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175

January 9, 2023

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


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240

January 9, 2023

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


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160

January 9, 2023

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


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151

January 9, 2023

When would you use random forests Vs SVM and why?


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168

January 9, 2023

Explain what precision and recall are


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178

January 9, 2023

What is a model ensembling?


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156

January 6, 2023

What is a hyperparameter tuning?


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168

January 6, 2023

What is the difference between batch and online learning?


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172

January 6, 2023

What is a support vector machine (SVM)?


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185

January 6, 2023

What is the curse of dimensionality?


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172

January 6, 2023

State and describe the different types of SQL joins


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178

January 5, 2023

What is the difference between UNION and UNION ALL?


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196

January 5, 2023
