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WalMart Data Science Interview Questions

Questions Answers Views Company eMail

Write the code to reverse a Linked list.

440

What assumptions does linear regression machine learning algorithm make?

359

What data structures are available in the Pandas package in Python programming language?

365

A stranger uses a search engine to find something and you do not know anything about the person. How will you design an algorithm to determine what the stranger is looking for just after he/she types few characters in the search box?

422

What do you understand by parametric and non-parametric methods? Explain with examples.

326

State some use cases where Hadoop MapReduce works well and where it does not.

346

How will you fix multi-colinearity in a regression model?

335

Have you used sampling? What are the various types of sampling have you worked with?

322

What is the difference between an iterator, generator and list comprehension in Python?

363

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

334

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Un-Answered Questions

Why did Banks get nationalised?

1045

What is the real time example of encapsulation?

1070

How to create a temporary table in oracle?

1270

How you can detect deadlock condition?

1180

Explain error boundaries?

383

difference between paramaters inputparameters,Local parameters, Formal parameters, Sand box parameters,Project parameters and export parameter?

2835

What is the meaning of windows operating system?

1064

Single line diagrams for star to delta and DOL starters.

2267

Explain what is a cause effect graph?

1033

Explain the functions of the two dma signals hold and hlda?

1141

Please write a reg expression that confirms an email id using the python reg expression module ?

1045

Why c is called a mid level programming language?

1075

How can you increase ports of a microprocessor?

1321

define data structure?

1765

Give a drawback of gradient descent ?