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Data Science Interview Questions
Questions Answers Views Company eMail

What is market basket analysis?

328

What is the central limit theorem?

332

What is linear optimization? Where is it used?

298

What is logistic and linear regression? How do you treat multicollinearity and heteroscedasticity in regression? Name some packages in r and python for building regression models.

274

What is cart and chaid? How is bagging different from boosting?

281

How is a normal distribution different from chi square distribution?

310

What is an outlier?

260

What is nosql? Name some examples of nosql databases. What is a key value store? What is column storage? What is a document database?

263

What is cart and chaid?

283

Define a sql query?

297

How would you do market basket analysis in r and python?

324

What are apis used for?

340

Which package is used to do data import in r and python?

298

What is the central limit theorem? How is a normal distribution different from chi square distribution?

305

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

317


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Un-Answered Questions { Data Science }

What is logistic and linear regression? How do you treat multicollinearity and heteroscedasticity in regression? Name some packages in r and python for building regression models.

274


Explain Data Science Vs Machine Learning?

309


How do you check for data quality?

294


Which method in pandas.tools.plotting is used to create scatter plot matrix?

387


Differentiate between type I and type ii error?

307


What skills do you need to be a data analyst?

310


What are the factors used to produce "People You May Know" data product on LinkedIn?

274


How do you do for loops in python and r?

335


A certain couple tells you that they have two children, at least one of whom is a girl. What is the probability that they have two girls?

294


How can you solve a problem that has no solution?

279


Why is Python used in data science?

316


Explain the difference between data science and data analytics?

316


What is the difference between Stack and Queue

451


Describe the data analysis process.

348


In k-means or knn, we use euclidean distance to calculate the distance between nearest neighbors. Why not manhattan distance?

379