Trianz Data Scientist Interview Questions and Answers

The first was a mcq based coding round for campus placement

This was a pairing coding round

Q1. Explain different unsupervised algo
Ans. 
Unsupervised algorithms are used to find patterns in data without labeled outcomes.
• K-means clustering: partitions data into K clusters based on similarity

• Hierarchical clustering: creates a tree of clusters based on similarity

• Principal Component Analysis (PCA): reduces dimensionality by finding orthogonal components

• Association rule mining: discovers interesting relationships between variables in large datasets
Answered by AI
Add your answer

OOPS concept and Dynamic Programming coding challenges

It was difficult and was on hackerrank

Q1. How to find a largest number in a list without using inbuilt function
Ans. 
Iterate through the list and compare each element to find the largest number.
• Iterate through the list using a loop

• Compare each element with a variable storing the current largest number

• Update the variable if a larger number is found
Answered by AI
Add your answer

Q1. Basic ML questions based on your project, python basic questions
Add your answer

Basic python questions on pandas,numpy, and basic SQL questions on windows function like lag

Q1. General ML questions
Add your answer
Q2. General dl. Questions
Add your answer

Test+2 interviews(technical and statistics)

Basic guestimates and case studies

Coding test of 2 hours ,include model building

Q1. First Project explanation and in between that ask for project related questions and also asked basic ml to advance ml questions
Add your answer