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Data Science Interview Questions
Questions Answers Views Company eMail

What makes scientific data?

323

What are feature vectors?

308

Among python and r, which one is generally preferred for text analytics?

310

What is the difference between a cluster and systematic sampling?

309

Describe some assumptions considered important for linear regression?

272

What is selection bias?

292

Differentiate between type I and type ii error?

308

Give an example of a data set that has a non-gaussian distribution?

308

What is the importance of data cleaning in analysis?

286

Describe the various steps involved while carrying out an analytical project?

295

Different between overfitting and underfitting?

368

Differentiate between skewed and uniform distribution?

322

Why is dimensional reduction performed before fitting a support vector machine (svm)?

335

What is the importance of selection bias?

311

What is the purpose of a/b testing?

296


Post New Data Science Questions

Un-Answered Questions { Data Science }

What functions are required to principal analysis in R?

398


How has your prior experience prepared you for a role in data science?

275


There are 8 identical balls and only one of the ball is slightly heavier than the others. You are given a balance scale to find the heavier ball. What is the least number of times you have to use the balance scale to find the heavier ball?

292


Write a program to segment a long string into a group of valid words using Dictionary. The result should return false if the string cannot be segmented. Also explain about the complexity of the devised solution.

403


What makes scientific data?

323


What do you understand by the selection bias? What are its various types?

288


How do you build a custom function in python or r?

311


What is the difference between an analyst and a data scientist?

298


How will you compare the results of various machine learning algorithms?

334


What is supervised learning?

278


What is the best laptop for data science?

298


What is meant by Poisson regression?

338


How can I become a data scientist?

315


What is machine learning and how can it be used for time series analysis?

268


What are distance measures in R statistics?

362