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

Data Science Interview Questions

Questions Answers Views Company eMail

Explain about string parsing in R language

Google,

345

A disc is spinning on a spindle and you don't know the direction in which way the disc is spinning. You are provided with a set of pins.How will you use the pins to describe in which way the disc is spinning?

Google,

443

Describe the data analysis process.

Google,

402

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

Google,

304

Define an algorithm to discover when a person is starting to search for new job.

LinkedIn,

364

How will you prove that the square root of 2 is irrational?

Goldman Sachs,

313

Explain principal components analysis with equations.

Uber,

363

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

Uber,

370

Implementing pow function

LinkedIn,

357

Find out K most frequent numbers from a given stream of numbers on the fly.

LinkedIn,

329

Which machine learning algorithm will you use to solve a Uber driver accepting request?

Uber,

365

What approach will you follow to develop the love,like, sad feature on Facebook?

Facebook,

387

You are given 50 cards with five different colors- 10 Green cards, 10 Red Cards, 10 Orange Cards, 10 Blue cards, and 10 Yellow cards. The cards of each colors are numbered from one to ten. Two cards are picked at random. Find out the probability that the cards picked are not of same number and same color.

Facebook,

461

Pick up a coin C1 given C1+C2 with probability of trials p (h1) =.7, p (h2) =.6 and doing 10 trials. And what is the probability that the given coin you picked is C1 given you have 7 heads and 3 tails?

Facebook,

344

Give a large dataset, find the median.

Twitter,

340

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Un-Answered Questions { Data Science }

What is the difference between data science, machine learning and artificial intelligence?

326

Define data reduction?

290

Can you explain supervised learning?

314

What is data scientist?

357

How will you design the heatmap for Uber drivers to provide recommendation on where to wait for passengers? How would you approach this?

1720

What is an api?

378

What is the law of large numbers?

341

What is the 80/20 rule?

340

What is nosql? Name some examples of nosql databases.

371

Explain the difference between data science, machine learning and artificial intelligence?

315

What is column storage? What is a document database?

406

Will Uber cause city congestion?

422

What are interpolation and extrapolation?

340

If we added one rider to the current SF market, how would that affect the existing riders and drivers?

388

What is meant by R statistics?

333

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