Data Science Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Data Science Interview Questions

Questions Answers Views Company eMail

Write a function that takes in two sorted lists and outputs a sorted list that is their union?

390

You created a predictive model of a quantitative outcome variable using multiple regressions. What are the steps you would follow to validate the model?

339

Can you cite some examples where a false negative important than a false positive?

355

Can you explain the difference between a Test Set and a Validation Set?

328

Can you cite some examples where both false positive and false negatives are equally important?

394

How can you assess a good logistic model?

405

What do you understand by the job description of data scientist?

332

How can you deal with different types of seasonality in time series modelling?

347

What is an Eigenvalue and Eigenvector?

337

What prior subject is required to become data analyst?

343

Why L1 regularizations causes parameter sparsity whereas L2 regularization does not?

412

What do you understand by statistical power of sensitivity and how do you calculate it?

327

Give some situations where you will use an SVM over a RandomForest Machine Learning algorithm and vice-versa?

453

How do data management procedures like missing data handling make selection bias worse?

486

What is meant by logistic regression?

390

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Un-Answered Questions { Data Science }

Explain how to write a table to a file?

377

Give some situations where you will use an SVM over a RandomForest Machine Learning algorithm and vice-versa?

453

What do you understand by decision tree?

447

What is the 80/20 rule?

333

What is meant by lattice graphs?

407

Explain data munging or data wrangling?

292

Which language is best for text analytics? R or python?

310

What is the goal of the clustering?

326

How can you reduce bias in a given data set?

353

Why is data cleaning essential in data science?

293

What is meant by selection bias?

373

What do you understand by Linear Regression in R?

595

Why is Python used in data science?

356

How will you cut a circular cake into 8 equal pieces?

299

How make you 3d plots/visualizations using numpy/scipy?

393

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