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Data Science Interview Questions
Questions Answers Views Company eMail

How do you handle missing values in python or r?

315

What is a document database?

402

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

394

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

350

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

314

What is a z test?

368

Why do you need a for loop?

336

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

300

Where linear optimization is used?

419

What is an api? What are apis used for?

335

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

337

What is t test?

332

What is the travelling salesman problem?

299

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

370

what is json and what is xml?

344


Post New Data Science Questions

Un-Answered Questions { Data Science }

How can you deal with different types of seasonality in time series modelling?

352


What is a z test?

368


What is meant by Random Forest Classifier?

306


What devices or tools help you most as a data scientist?

305


How can I become a data scientist?

353


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

386


What is skewed distribution & uniform distribution?

337


How and by what methods data visualizations can be effectively used?

344


Explain while working on a data set, how do you select important variables?

343


How many people are using Facebook in California at 1.30 PM on Monday?

427


On rolling a dice if you get $1 per dot on the upturned face,what are your expected earnings from rolling a dice?

289


What are the various steps involved in an analytics project?

337


What is a generating function?

361


What will be your expected earnings with the two roll strategy?

502


Discuss artificial neural networks

387