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?

355

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

301

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

314

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

301

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

355

How can you assess a good logistic model?

372

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

302

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

312

What is an Eigenvalue and Eigenvector?

317

What prior subject is required to become data analyst?

311

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

371

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

292

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

428

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

451

What is meant by logistic regression?

357

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Un-Answered Questions { Data Science }

Explain types of statistical data?

287

What is the advantage of performing dimensionality reduction before fitting an svm?

271

How will you explain JOIN function in SQL to a 10 year old ?

344

What do you do as a data scientist?

316

What is the difference between select and update query?

354

Explain principal components analysis with equations.

316

Why data cleaning plays a vital role in the analysis?

344

What is the aim of a/b testing?

274

Advantages of tableau prep?

308

What is the difference between an iterator, generator and list comprehension in Python?

322

Are expected value and mean value different?

380

What is the difference between iterator and generator in Python?

369

How do you use sql in sas, python, r languages?

309

What are requirements for clustering?

459

Discuss normal distribution

352

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