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Data Science Interview Questions
Questions Answers Views Company eMail

What will you do if removing missing values from a dataset cause bias?

Airbnb,

311

How can you reduce bias in a given data set?

Airbnb,

308

How will you impute missing information in a dataset?

Airbnb,

291

Estimate the probability of a disease in a particular city given that the probability of the disease on a national level is low.

Amazon,

288

How will inspect missing data and when are they important for your analysis?

Amazon,

333

How will you decide whether a customer will buy a product today or not given the income of the customer, location where the customer lives, profession and gender? Define a machine learning algorithm for this.

Amazon,

252

From a long sorted list and a short 4 element sorted list, which algorithm will you use to search the long sorted list for 4 elements.

Amazon,

288

How can you compare a neural network that has one layer, one input and output to a logistic regression model?

Amazon,

254

How do you treat colinearity?

Amazon,

278

How will you deal with unbalanced data where the ratio of negative and positive is huge?

Amazon,

281

What is the difference between Stack and Queue

Amazon,

418

What is the difference between Linkedin and Array

Amazon,

350

You are about to get on a plane to Seattle, you want to know whether you have to bring an umbrella or not. You call three of your random friends and as each one of them if it's raining. The probability that your friend is telling the truth is 2/3 and the probability that they are playing a prank on you by lying is 1/3. If all 3 of them tell that it is raining, then what is the probability that it is actually raining in Seattle.

Facebook,

283

You have been given the data on Facebook user's friending or defriending each other. How will you determine whether a given pair of Facebook users are friends or not?

Facebook,

299

Estimate the number of square feet pizza's eaten in US each year.

Goldman Sachs,

299


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Un-Answered Questions { Data Science }

What is missing value imputation? How do you handle missing values in python or r?

301


Name three types of biases that can occur during sampling?

287


List out the libraries in python used for data analysis and scientific computations?

258


What are you employed pip?

289


Can you explain systematic sampling?

276


What is the difference between a bagged model and a boosted model?

289


What is difference between sas, r and python programming?

304


What is supervised learning?

264


What Is An Avl Tree?

261


Different between overfitting and underfitting?

347


Advantages of tableau prep?

291


Can you use a generator to create iterators?

348


What are apis used for?

323


What laptop should I buy for data science?

299


Discuss artificial neural networks

326