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Data Science Interview Questions
Questions Answers Views Company eMail

What data structures are available in the Pandas package in Python programming language?

WalMart,

332

What is a joke that people say about you and how would you rate the joke on a scale of 1 to 10?

Mu Sigma,

304

How to solve multi-collinearity?

Uber,

369

Count the total number of trees in United States.

Goldman Sachs,

299

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.

LinkedIn,

403

How can bogus Facebook accounts be detected?

Facebook,

308

How many dentists are there in US?

Facebook,

365

What motivates you to transition from academia to data science?

Insight,

285

A stranger uses a search engine to find something and you do not know anything about the person. How will you design an algorithm to determine what the stranger is looking for just after he/she types few characters in the search box?

WalMart,

394

Define standard deviation, mean, mode and median.

Mu Sigma,

393

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?

Goldman Sachs,

292

What kind of product you want to build at LinkedIn?

LinkedIn,

282

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

Uber,

345

What is the probability of pulling a different shape or a different colour card from a deck of 52 cards?

Facebook,

280

Given 2 vectors, how will you generate a sorted vector?

LinkedIn,

303


Post New Data Science Questions

Un-Answered Questions { Data Science }

What are big data and data science?

401


Define a sql query? What is the difference between select and update query? How do you use sql in sas, python, r languages?

337


Explain the decision tree algorithm, and how is it different from the random forest algorithm?

281


What are you employed pip?

305


What are eigenvectors and eigenvalues?

376


Name three disadvantages of using a linear model?

340


What is the goal of the clustering?

291


What is column storage?

328


You own a clothing enterprise and want to improve your place in the market. How will you do it from the ground level ?

278


What Is An Avl Tree?

278


Are the expected value and mean value different?

342


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


Can you explain difference between data modeling and database design?

319


Do we have different selection biases, if yes, what are they?

357


Explain how to define the number of clusters in a clustering algorithm?

370