Question 1

SQL Interview Questions | PARTITION key

Question

How to go about picking a good PARTITION key for a big table, and what are some of the "gotchas" of a badly chosen PARTITION key. It might seem to be simple, but you need to give a good explanation ...

in progress 2

SQL 55 years 0 Answers 1974 views Great Grand Master

Question 2

Linear Regression | Is it necessary to satisfy all the assumptions of Linear Regression?

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LR

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Statistics 55 years 0 Answers 1120 views Grand Master

Question 3

Affine Analytics Interview Questions | Business Case Study

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There is a mobile company which is very popular in Other Asian countries. The company is planning to open it's branch in the most popular mall of Bangalore.What should be the strategy of the company?How can you use ...

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Case Study 55 years 0 Answers 1755 views Grand Master

Question 4

Create a Queue using Array

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Create a queue along with Push,pop function using Array

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Interview Question 55 years 0 Answers 852 views Member

Question 5

Myntra Interview Question | Case Study 2 | Design people you may know feature for Linkedin or Facebook

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How would you design the people you may know feature on LinkedIn or Facebook?

in progress 0

Case Study 55 years 0 Answers 1375 views Grand Master

Question 6

Flipkart | NLP Interview Question 1| Functions in Python

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Define the following functions findall() search() match() split()

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Interview Question 55 years 0 Answers 1002 views Grand Master

Question 7

What is Hash Join?

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With example

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SQL 55 years 0 Answers 1322 views Grand Master

Question 8

100 Interview Questions

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Web Analytics

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R 55 years 0 Answers 979 views Grand Master

Question 9

Case Study | Amazon Data Science interview

Question

Taj group is planning to open a new restaurant in Rohtak. To make it reach to the masses they need to advertise and let people know that they are here, and there is nothing better than digital marketing. As a head ...

in progress 0

Case Study 55 years 0 Answers 1890 views Contributor

Question 10

How can you resample statistical tests in R language?

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Be specific

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R 55 years 0 Answers 997 views Great Grand Master

Question 11

Is it possible to model transitioning data like time-zone or a working directory?

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State reason behind your answer.

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R 55 years 0 Answers 837 views Great Grand Master

Question 12

. What are all different types of collation sensitivity?

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Explain each with an example

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Python 55 years 0 Answers 892 views Great Grand Master

Question 13

Case Study | Zomato Interview Question

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Taj Group of Hotels is planning to start a new branch, What are the parameters it should consider to find the appropriate place? Talk about ROI, Demography, Labour cost, etc.

in progress 0

Case Study 55 years 0 Answers 2251 views Contributor

Question 14

Case Study | Interview Question

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How do you think TVF makes a profit? Did moving to its own website advantageous to TVF? Opinion based question

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Case Study 55 years 0 Answers 923 views Contributor

Question 15

Correlation

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Which of the following statements are true about Bessels Correction while calculating a sample standard deviation? Bessels correction is always done when we perform any operation on a sample data. Bessels correction is used when we are trying to estimate ...

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Statistics 55 years 0 Answers 883 views Contributor

Question 16

Case Study

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Studies show that listening to music while studying can improve your memory. To demonstrate this, a researcher obtains a sample of 36 college students and gives them a standard memory test while they listen to some background music. Under normal ...

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Case Study 55 years 0 Answers 1752 views Contributor

Question 17

Aptitude

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How would you weigh a plane without a scale?

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Interview Question 55 years 0 Answers 945 views Contributor

Question 18

Python Memory Manager

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How is memory managed in Python?

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Python 55 years 0 Answers 867 views Contributor

Question 19

How can you make a Python Script executable on Unix?

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Please explain

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Python 55 years 0 Answers 867 views Contributor

Question 20

Where do you see yourself in 10 years? Best optimistic and intellectual answer?

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The most asked interview question of all time. It helps the interviewer understand the goals and objectives of the candidate, before coming to the part about what he/she will do to achieve it.

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Interview Question 55 years 0 Answers 992 views Newbie

Question 21

Case Study | Reduce costs and improve performance

Question

Your client is a telephone company trying to reduce the costs and improve performance in the repair service operation. How do you approach the problem? How would you go about implementing your solution?

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Case Study 55 years 0 Answers 699 views Great Grand Master

Question 22

Why do we need to make the dataset stationary in time series analysis ?

Question

I have always heard that data needs to be stationary, but why ?

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Machine Learning 55 years 0 Answers 872 views Contributor

Question 23

How to read PACF graph for time series ? Hike Interview question

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If possible please explain using graph.

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Machine Learning 55 years 0 Answers 939 views Contributor

Question 24

What is the confusion matrix? Explain it for a 2-class problem

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Please explain in layman terms

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Machine Learning 55 years 0 Answers 872 views Contributor

Question 25

What do you understand by information gain?

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Please explain with example

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Machine Learning 55 years 0 Answers 829 views Contributor

Question 26

How can you speed up the model’s classification/prediction time?

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Please explain

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Machine Learning 55 years 0 Answers 849 views Contributor

Question 27

You came to know that your model is suffering from low bias and high variance.

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Which algorithm should you use to tackle it? Why?

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Machine Learning 55 years 0 Answers 800 views Great Grand Master

Question 28

What is the full form of ROC and how is it used ?

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Explain how a ROC curve works.

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Machine Learning 55 years 0 Answers 724 views Contributor

Question 29

Explanation

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what is markpov network?

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Machine Learning 55 years 0 Answers 873 views Contributor

Question 30

What is inductive Machine Learning ?

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what is inductive machine learning ?

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Machine Learning 55 years 0 Answers 907 views Contributor

Question 31

What is the difference between Cluster and Non-Cluster Index?

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Explain in layman terms

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SQL 55 years 0 Answers 968 views Great Grand Master

Question 32

What are different types of UDF in SQL?

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In SQL

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SQL 55 years 0 Answers 1106 views Great Grand Master

Question 33

What is a docstring?

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Give an example.

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Python 55 years 0 Answers 922 views Great Grand Master

Question 34

What does the function zip() do?

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Explain with a code.

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Python 55 years 0 Answers 933 views Great Grand Master

Question 35

Handling Missing Data

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How do you handle missing or corrupted data in a dataset?

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Machine Learning 55 years 0 Answers 735 views Contributor

Question 36

Data visualization

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Which data visualization libraries do you use? What are your thoughts on the best data visualization tools?

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Machine Learning 55 years 0 Answers 852 views Contributor

Question 37

Machine Learning paper

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What are the last machine learning papers you’ve read

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Machine Learning 55 years 0 Answers 770 views Contributor

Question 38

Use cases of Machine Learning

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What are your favorite use cases of machine learning models?

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Machine Learning 55 years 0 Answers 717 views Contributor

Question 39

Data Science | dataset

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Where do you usually source datasets?

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Machine Learning 55 years 0 Answers 820 views Contributor

Question 40

Data Science | AlphaGo

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How would you simulate the approach AlphaGo took to beat Lee Sidol at Go?

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Machine Learning 55 years 0 Answers 813 views Contributor

Question 41

Case Study – Memory constraint problem

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You are given a train data set having 1000 columns and 1 million rows. The data set is based on a classification problem. Your manager has asked you to reduce the dimension of this data so that model computation time ...

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Case Study 55 years 0 Answers 929 views Contributor

Question 42

Data Science Algorithm Interview Question

Question

You are assigned a new project which involves helping a food delivery company save more money. The problem is, company’s delivery team aren’t able to deliver food on time. As a result, their customers get unhappy. And, to keep them happy, they ...

0

Machine Learning 55 years 0 Answers 729 views Contributor

Question 43

Should CSR activity be neccasory for every organization

Question

According to the current scenario and government policies we have seen that CSR activities are a must and obligation for an organization to do? do you agree with organizations that are not able to meet the profit should get involved ...

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Interview Question 55 years 0 Answers 1085 views Newbie

Question 44

What is ADF test while checking Time series data ?

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Why do we actually do ADF test?

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Machine Learning 55 years 0 Answers 771 views Contributor

Question 45

Is rotation necessary in PCA? If yes, Why?

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Is rotation necessary in PCA? If yes, Why? What will happen if you don’t rotate the components?

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Machine Learning 55 years 0 Answers 792 views Contributor

Question 46

Why my high accuracy model is not fit for application?

Question

You are given a data set on cancer detection. You’ve build a classification model and achieved an accuracy of 96%. Why shouldn’t you be happy with your model performance? What can you do about it?

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Machine Learning 55 years 0 Answers 686 views Contributor

Question 47

Time series regression model got higher accuracy than the decision tree model

Question

You are working on a time series data set. You manager has asked you to build a high accuracy model. You start with the decision tree algorithm, since you know it works fairly well on all kinds of data. Later, ...

in progress 0

Machine Learning 55 years 0 Answers 1030 views Contributor

Question 48

Data Science Case Study

Question

You are assigned a new project which involves helping a food delivery company save more money. The problem is, company’s delivery team aren’t able to deliver food on time. As a result, their customers get unhappy. And, to keep them happy, they ...

0

Machine Learning 55 years 0 Answers 894 views Contributor

Question 49

Data Science Interview Question | PCA

Question

You are given a data set. The data set contains many variables, some of which are highly correlated and you know about it. Your manager has asked you to run PCA. Would you remove correlated variables first? Why?

1

Interview Question 55 years 0 Answers 1107 views Contributor

Question 50

Case Study | Flipkart Interview Question

Question

McDonald's wants to open its first franchise in Singapore. As a Project Manager what all things you need to look into before stepping foot in Singapore? Think of all the factors. Hint - Talk about Law and Order, Leasing amount, Escape plan, ...

2

Case Study 55 years 0 Answers 2888 views Grand Master

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