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WalMart Data Science Interview Questions
Questions Answers Views Company eMail

Write the code to reverse a Linked list.

 179

What assumptions does linear regression machine learning algorithm make?

 125

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

 125

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?

 212

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

 98

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

 117

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

 101

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

 106

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

 125

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

 129

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WalMart Data Science Interview Questions


Un-Answered Questions

Which filter executes first in an asp.net mvc application?

547

How does development of software differ from that of hardware from a quality viewpoint?

636

who got padhmabhushan award on 2008

1558

hi ,i need some suggestion,comptd my graduation in 2012,but i wasted my time for 6 month,just i want 2 escape from this question,what u did for 6 months,how can i give proper anser to them?pls suggest me

1820

Explain link popularity and how it helps exactly.

434




Difference between parameter table and Normal table?

3

How to retrieve css properties of an element?

483

Difference between new operator and class.forname().newinstance()?

597

requirement:To move display statements in a cobol program to a dataset.These display statements were not in main program but in calling program and we were not allowed to move these info via sysout dd dsn='dataset.name' . please let me know the ways this can be handled

1466

How do you check which service is running on which port in linux?

459

How will you design an email spam filter?

87

How to open a file in ubuntu terminal?

367

Source table has 5 rows. Rank in rank transformation is set to 10. How many rows the rank transformation will output?

581

What do you mean by Logical Error

553

What is a heartbeat in HDFS?

622