Harmonic mean of precision and recall

Arithmetic mean of precision and recall

Geometric mean of precision and recall

Weighted average of accuracy and recall

True positive rate vs false positive rate

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Free CFA Quantitative Methods Practice Questions & Answers

1,200 exam-style Quantitative Methods questions. Pick your answer, hit Check answer, and see the worked solution — free to start, no signup.

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Question 631

Very common words are removed because they:

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Question 632

Very rare words are often removed because they:

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Question 633

A confusion matrix includes:

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Question 634

Precision is defined as:

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Question 635

Recall is defined as:

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Question 636

The F1 score is the:

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Question 637

Accuracy is misleading in imbalanced datasets because:

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Question 638

Feature selection in text data aims to:

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Question 639

Removing tokens with extremely low or high TF is:

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Question 640

Tokens with high mutual information values are typically:

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Question 641

Chi‑square feature selection is used to:

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Question 642

A major limitation of bag‑of‑words models is that they:

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Question 643

A key limitation of TF‑IDF is that it:

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Question 644

ROC curves plot:

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Question 645

A model with high training AUC but low validation AUC is:

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Question 646

Grid search is a method for:

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Question 647

Class imbalance most directly affects:

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Question 648

The primary purpose of Exploratory Data Analysis (EDA) is to:

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Question 649

Feature selection aims to:

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Question 650

Feature engineering aims to:

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Question 651

A heat map is most useful for visualizing:

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Question 652

A feature with extremely low variance is likely:

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Question 653

A feature that is constant for all observations:

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Question 654

One risk of excessive feature engineering is:

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Question 655

A feature strongly correlated with the target variable is:

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Question 656

A feature that leaks information from the future is:

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Question 657

A feature that is highly predictive but unstable across samples may cause:

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Question 658

The main purpose of EDA is to:

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Question 659

A categorical variable with only one category for all observations should be:

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Question 660

A feature that is difficult to interpret but improves accuracy is:

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Free CFA Quantitative Methods Practice Questions & Answers

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