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,

348

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,

444

Describe the data analysis process.

Google,

406

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

Google,

310

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

LinkedIn,

365

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

Goldman Sachs,

313

Explain principal components analysis with equations.

Uber,

369

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

Uber,

370

Implementing pow function

LinkedIn,

358

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

LinkedIn,

331

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

Uber,

372

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,

463

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,

341

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Un-Answered Questions { Data Science }

What are the important skills to have in python with regard to data analysis?

342

How does data cleaning plays a vital role in the analysis?

413

What is a recall?

385

Define convex hull?

326

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

335

What is nosql? Name some examples of nosql databases. What is a key value store? What is column storage? What is a document database?

301

What is the procedure to check the cumulative frequency distribution of any categorical variable?

412

What is jupyter ?

371

How do you use lambda in python?

373

What is missing value imputation?

358

What do you mean by p-value?

323

Explain the differences between univariate, bivariate and multivariate analysis?

309

How would you say data science is similar or different to business analytics and business intelligence?

314

What exactly does a data scientist do?

368

Can you define data discretization?

275

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