Boston Scientific Senior Data Analyst Interview Questions and Answers

2 questions based on coding

Q1. Reverse a string
Ans. 
Reverse a given string
• Use built-in functions like reverse() or slice() in Python

• Iterate through the string in reverse order and append each character to a new string

• Convert the string to an array of characters, reverse the array, then join the characters back together
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Q2. Linked list in java
Ans. 
A linked list is a data structure in Java where each element points to the next element in the list.
• Linked list nodes contain data and a reference to the next node

• Insertion and deletion operations are efficient in linked lists

• Traversal requires iterating through each node starting from the head

• Example: Node class with data and next pointer, LinkedList class with methods to insert, delete, and traverse
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It was basic aptitude but it was online

Q1. Write python code for bizzbuss for prime or not prime\
Ans. 
Python code for determining if a number is prime or not and applying bizzbuzz logic.
• Write a function to check if a number is prime or not

• Iterate through a range of numbers and apply bizzbuzz logic

• Return 'prime' if the number is prime, 'bizz' if divisible by 3, 'buzz' if divisible by 5, and 'bizzbuzz' if divisible by both 3 and 5
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Q1. Random forest splitting mechanisms details
Ans. 
Random forest uses decision trees to split data into subsets based on feature importance.
• Random forest builds multiple decision trees and selects the best split based on feature importance.

• Each decision tree splits data into subsets based on a randomly selected subset of features.

• The best split is determined by minimizing impurity or maximizing information gain.

• Random forest can handle missing values and outliers.

• Rando...read more
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Q2. ResNet architecture and skip connection related questions
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Q1. OCR related bounding box detection from image
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Q2. Deep learning based questions and details
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Q1. Salary discussion, current salary and expected
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Q2. About Optum, why you want to join
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Q1. About yourself and interests
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Q2. Past experiences regarding the role
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