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Machine Learning Questions

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Warning: count(): Parameter must be an array or an object that implements Countable in /var/www/html/live/makepost.php on line 52
Machine Learning Questions
6 followers study24x7 30 Jan 2026 12:49 PM study24x7 study24x7

Recall focuses on:

A

True negatives

B

False positives

C

Correctly identified positives

D

Total samples

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Machine Learning Questions
6 followers study24x7 30 Jan 2026 12:48 PM study24x7 study24x7

Precision focuses on:

A

Correct positive predictions

B

Correct negative predictions

C

Total predictions

D

Error rate

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Machine Learning Questions
6 followers study24x7 30 Jan 2026 12:47 PM study24x7 study24x7

Which algorithm is most affected by outliers?

A

Decision Tree

B

K-Means

C

Random Forest

D

Naive Bayes

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Machine Learning Questions
6 followers study24x7 29 Jan 2026 11:53 AM study24x7 study24x7

Which method helps deal with imbalanced datasets?

A

Normalization

B

Feature selection

C

SMOTE

D

Cross-validation

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Machine Learning Questions
6 followers study24x7 29 Jan 2026 11:52 AM study24x7 study24x7

Which technique converts text into numerical vectors based on frequency?

A

Word2Vec

B

TF-IDF

C

PCA

D

SMOTE

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Machine Learning Questions
6 followers study24x7 29 Jan 2026 11:52 AM study24x7 study24x7

Which problem occurs when training data accidentally includes test data?

A

Overfitting

B

Bias

C

Data leakage

D

Variance

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Machine Learning Questions
6 followers study24x7 28 Jan 2026 12:23 PM study24x7 study24x7

Which technique helps reduce noise by combining multiple models?

A

Regularization

B

Ensemble learning

C

Feature scaling

D

Sampling

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Machine Learning Questions
6 followers study24x7 28 Jan 2026 12:22 PM study24x7 study24x7

Which boosting algorithm adjusts weights of misclassified samples?

A

Bagging

B

Random Forest

C

AdaBoost

D

PCA

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Machine Learning Questions
6 followers study24x7 28 Jan 2026 12:22 PM study24x7 study24x7

Which clustering algorithm requires the number of clusters beforehand?

A

DBSCAN

B

Hierarchical clustering

C

K-Means

D

Mean Shift

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Machine Learning Questions
6 followers study24x7 27 Jan 2026 12:08 PM study24x7 study24x7

Which algorithm finds a maximum-margin hyperplane?

A

Logistic Regression

B

Decision Tree

C

Support Vector Machine

D

K-Means

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Machine Learning Questions
6 followers study24x7 27 Jan 2026 12:07 PM study24x7 study24x7

Which algorithm assumes independence among features?

A

SVM

B

KNN

C

Naive Bayes

D

Random Forest

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Machine Learning Questions
6 followers study24x7 27 Jan 2026 12:07 PM study24x7 study24x7

Which algorithm uses entropy or Gini index for splitting?

A

KNN

B

Decision Tree

C

Logistic Regression

D

Naive Bayes

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Machine Learning Questions
6 followers study24x7 23 Jan 2026 03:10 PM study24x7 study24x7

Which type of ML updates the model continuously as new data arrives?

A

Batch learning

B

Offline learning

C

Online learning

D

Static learning

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Machine Learning Questions
6 followers study24x7 23 Jan 2026 03:08 PM study24x7 study24x7

Which term describes learning from a small labeled dataset and a large unlabeled dataset?

A

Online learning

B

Reinforcement learning

C

Semi-supervised learning

D

Batch learning

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Machine Learning Questions
6 followers study24x7 23 Jan 2026 03:06 PM study24x7 study24x7

Which scenario is best suited for classification?

A

Predicting house prices

B

Predicting temperature

C

Email spam detection

D

Stock price prediction

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Machine Learning Questions
6 followers study24x7 22 Jan 2026 01:22 PM study24x7 study24x7

What is the main role of a loss function?

A

Improve hardware speed

B

Measure model error

C

Normalize data

D

Encode labels

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Machine Learning Questions
6 followers study24x7 22 Jan 2026 01:21 PM study24x7 study24x7

Which ML approach learns patterns without using target labels?

A

Supervised learning

B

Unsupervised learning

C

Reinforcement learning

D

Transfer learning

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Machine Learning Questions
6 followers study24x7 22 Jan 2026 01:20 PM study24x7 study24x7

Which algorithm is widely used in fraud detection?

A

Linear Regression

B

K-Means

C

Isolation Forest

D

PCA only

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Machine Learning Questions
6 followers study24x7 21 Jan 2026 11:22 AM study24x7 study24x7

Which ML concept allows models to improve with more data over time?

A

Hard coding

B

Static programming

C

Learning curve

D

Data leakage

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Machine Learning Questions
6 followers study24x7 21 Jan 2026 11:22 AM study24x7 study24x7

Which regularization technique adds absolute values of weights to the loss function?

A

Ridge

B

L1 (Lasso)

C

L2

D

Dropout

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