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Data Science Interview Questions
Questions Answers Views Company eMail

How do you treat multicollinearity and heteroscedasticity in regression?

297

What is logistic and linear regression? How do you treat multicollinearity and heteroscedasticity in regression?

255

What is an api?

312

What is nosql? Name some examples of nosql databases.

320

How do you build a custom function in python or r?

305

What is missing value imputation?

308

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

320

How do you check for data quality?

289

What is advantage of using apply family of functions in r? How do you use lambda in python?

318

What is column storage? What is a document database?

340

What is association analysis? Where is it used?

320

How do you use goal seek in excel?

357

What is chi square test?

283

What is churn?

284

Where is association analysis used?

339


Post New Data Science Questions

Un-Answered Questions { Data Science }

What do you know about autoencoders?

308


What are feature vectors?

299


Explain about the box cox transformation in regression models?

254


Describe univariate, bivariate and multivariate analysis?

256


What is selection bias and why does it matter?

288


Do you prefer python or r for text analytics?

275


Explain recommender systems?

308


Please explain the goal of a/b testing.

298


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

255


Case Study based questions - Cars are implanted with speed tracker so that the insurance companies can track about our driving state. Based on this new scheme what kind of business questions can be answered?

426


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

260


How long does it take to become a data scientist?

388


Which one you prefer R or Python for text analytics?

362


Define the term deep learning?

285


What do you understand by type I vs type ii error?

295