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PwC Data Scientist Interview Questions and Answers
PwC Data Scientist Interview Experiences
5 interviews found
Hemant Yadav
Selected
I applied via Approached by Company and was interviewed in Oct 2024. There were 2 interview rounds.
Combination logic on python
(1 Question)
- Q1. Explain classification
- Ans.
Classification is a machine learning technique used to categorize data into different classes or categories based on past observations.
Classification involves training a model on labeled data to predict the class of new, unseen data points.
Common algorithms for classification include logistic regression, decision trees, support vector machines, and k-nearest neighbors.
Examples of classification tasks include spam email...
Anonymous
Selected
I applied via Company Website and was interviewed in Apr 2024. There was 1 interview round.
(1 Question)
- Q1. Write a prompt to extract key Personal Identifiable Information given a resume
- Ans.
Extracting key Personal Identifiable Information from a resume prompt
Look for information such as full name, address, phone number, email address, date of birth, and social security number
Utilize natural language processing techniques to identify patterns and structures in the text
Consider using regular expressions to match specific formats of personal information
Ensure data privacy and security measures are in place w...
Interview Preparation Tips
I applied via LinkedIn
(1 Question)
- Q1. Why do you want to for PWC?
- Ans.
I am drawn to PWC for its commitment to innovation, diverse projects, and a collaborative environment that fosters professional growth.
Reputation for Excellence: PWC is known for its high standards and quality of service, which aligns with my personal values of delivering impactful work.
Diverse Projects: The opportunity to work on a variety of projects across different industries excites me, as it allows for continuous...
I applied via Job Portal and was interviewed in Aug 2022. There were 2 interview rounds.
Coding Interview on Python for 15 minutes. Straight away to coding. Did one basic mistake first then others attended well. Basically from List operations, Pandas DF merging,concat etc.One simple pattern program etc.But no confimation yet from them
(2 Questions)
- Q1. List compehension example,List multiplications,Pandas merge,join,concat,some pattern program general;
- Q2. List comprehension example, Pandas merging code etc
Interview Preparation Tips
Then Pandas functions you should be more clear
What people are saying about PwC
I applied via Recruitment Consulltant and was interviewed in Jul 2022. There was 1 interview round.
(2 Questions)
- Q1. How to find 2 nd largest number
- Ans.
To find the 2nd largest number in an array, sort the array in descending order and return the element at index 1.
Sort the array in descending order
Return the element at index 1
- Q2. How to join two data frame
- Ans.
Joining two data frames involves merging them based on a common column or index.
Use pandas merge() function to join data frames based on a common column or index.
Specify the column or index to merge on using the 'on' parameter.
Choose the type of join to perform using the 'how' parameter (e.g. inner, outer, left, right).
Interview Preparation Tips
Skills evaluated in this interview
Interview questions from similar companies
Interview Preparation Tips
Experience: There were 3 rounds, All related to statistics and machine learning and whatever stuffs I had mentioned in my resume. HR round was not there. The partner of the firm just briefed me a bit about the company and asked me to relax without asking any questions in the third round.
Tips: Interview will be fun if you are thorough about your resume and it will be a cakewalk to you.
General Tips: Do's :
1. Prepare for Aptitude very seriously. Puzzles are important but aptitude is must.
2. Be thorough about everything you had specified in your resume
3. Be honest while creating your resume (It helps a lot)
Don'ts :
1. Don't get broken if you are not getting selected in Day 1 or 2 or so.
2. Don't over-prepare for case interviews, they are fairly simple.
Final Tips :
Be confident about yourself. Your attitude in the interview matters a lot. And don't lie even a bit in your resume. Many got selected with a poor resume than those with huge exaggerations.
College Name: IIT Kanpur
ritika singh
I applied via Naukri.com and was interviewed in Apr 2021. There were 5 interview rounds.
Interview Questionnaire
1 Question
- Q1. Sql and python basics
Interview Preparation Tips
Selected
- Q1. What are the evaluation metrics used in Machine Learning, including their nuances, edge cases, and robustness?
- Ans.
Evaluation metrics in ML assess model performance, guiding improvements and ensuring reliability across various scenarios.
Accuracy: Measures the proportion of correct predictions. Useful for balanced datasets but misleading for imbalanced ones.
Precision: The ratio of true positives to the sum of true positives and false positives. Important in scenarios like spam detection.
Recall (Sensitivity): The ratio of true positi...
- Q2. Questions on RAG, Prompting techniques
Machine Learning, Metrics
Selected
I applied via Naukri.com and was interviewed before Jun 2023. There were 3 interview rounds.
Marketing case study
Ops case study for plant set up
(1 Question)
- Q1. Salary expectation
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