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
Answered by AI
Add your answer
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
Answered by AI
Add your answer

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
Answered by AI
Add your answer

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
Answered by AI
Add your answer
Q2. ResNet architecture and skip connection related questions
Add your answer

Q1. OCR related bounding box detection from image
Add your answer
Q2. Deep learning based questions and details
Add your answer

Q1. Salary discussion, current salary and expected
Add your answer
Q2. About Optum, why you want to join
Add your answer

Q1. Tableau Top 100 Question
Add your answer

Q1. Tableau and SQL related questions.
Add your answer

Q1. Salary Discussion and how early u can join that kind of question.
Add your answer

Q1. What is random forest
Ans. 
Random forest is an ensemble learning method used for classification and regression tasks.
• Random forest is a collection of decision trees that are trained on random subsets of the data.

• Each tree in the random forest independently predicts the target variable, and the final prediction is made by averaging the predictions of all trees.

• Random forest is robust to overfitting and noisy data, and it can handle large datasets...read more
Answered by AI
Add your answer
Q2. Bias variance trade off
Add your answer

Q1. SQL,Aptitude Questions
Add your answer
Q2. Logical Questions,case studies
Add your answer

Q1. Fundamentals of ML, classical ML
Ans. 
Fundamentals of classical machine learning
• Classical machine learning involves algorithms that learn from data and make predictions or decisions.

• Common algorithms include linear regression, decision trees, support vector machines, and k-nearest neighbors.

• Key concepts include training data, testing data, model evaluation, and hyperparameter tuning.

• Classical ML is often used for tasks like classification, regression, clus
Answered by AI
Add your answer

Q1. Research paper discussion
Add your answer