About the Data Science Interview Questions category


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76

January 4, 2023

What is Levenshtein distance and how is it useful?


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123

February 13, 2023

What is pruning in a decision tree algorithm?


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72

January 9, 2023

What is the ROC curve?


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70

January 9, 2023

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


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73

January 9, 2023

How can you calculate accuracy using a confusion matrix?


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77

January 9, 2023

What are recommender systems?


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66

January 9, 2023

Differentiate between univariate, bivariate, and multivariate analysis


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83

January 9, 2023

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


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67

January 9, 2023

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


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71

January 9, 2023

What are the difference between Clustered and a Nonclustered index?


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73

January 9, 2023

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


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91

January 9, 2023

What is correlation and covariance in statistics?


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68

January 9, 2023

What is Entropy and Information Gain in decision tree algorithm?


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74

January 9, 2023

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


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74

January 9, 2023

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


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66

January 9, 2023

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


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78

January 9, 2023

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


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70

January 9, 2023

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


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87

January 9, 2023

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


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68

January 9, 2023

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


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63

January 9, 2023

When would you use random forests Vs SVM and why?


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73

January 9, 2023

Explain what precision and recall are


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81

January 9, 2023

What is a model ensembling?


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71

January 6, 2023

What is a hyperparameter tuning?


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71

January 6, 2023

What is the difference between batch and online learning?


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70

January 6, 2023

What is a support vector machine (SVM)?


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75

January 6, 2023

What is the curse of dimensionality?


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74

January 6, 2023

State and describe the different types of SQL joins


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86

January 5, 2023

What is the difference between UNION and UNION ALL?


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77

January 5, 2023
