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Data Science Interview Questions
Questions Answers Views Company eMail

How do you handle missing values in python or r?

318

What is a document database?

408

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

402

Why do you need a for loop? How do you do for loops in python and r?

356

What is random forests and how is it different from decision trees?

317

What is a z test?

371

Why do you need a for loop?

342

How would churn help predict and control churn for a customer?

301

Where linear optimization is used?

426

What is an api? What are apis used for?

336

What is logistic and linear regression? Name some packages in r and python for building regression models.

343

What is t test?

338

What is the travelling salesman problem?

300

Define a sql query? What is the difference between select and update query?

377

what is json and what is xml?

347


Post New Data Science Questions

Un-Answered Questions { Data Science }

How will you find the second largest element in a Binary Search tree ?

306


Does the data scientist need to know programming?

406


Compare sas, r, python, perl?

348


You have two sorted array of integers, write a program to find a number from each array such that the sum of the two numbers is closest to an integer i.

332


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

334


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

328


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

315


What do you understand by clustering?

310


What are the roles and responsibilities of a data scientist?

350


Explain the term binomial probability formula?

331


What are feature vectors?

349


Write a function that takes in two sorted lists and outputs a sorted list that is their union?

416


What is the difference between Linkedin and Array

430


What is the best laptop for data science?

323


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

333