Shadowfax Technologies Senior Data Analyst Interview Questions and Answers for Freshers

Aptitude test went good like the CAT

Q1. Detailed questions on probability. Statistical questions.
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Q1. Guess estimate question
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Q2. Advance excel
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Q3. Statistics basic
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Q1. What is your name
Ans. 
My name is John Doe.
• My first name is John

• My last name is Doe
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Q2. Introducing ur self
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Q1. Why do you want work for us?
Ans. 
I am impressed by your company's innovative approach to data analysis and want to be a part of your team.
• I admire your company's reputation in the industry

• I am excited about the opportunity to work on cutting-edge projects

• I believe my skills and experience align well with the company's goals
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Q2. What are you strength
Ans. 
My strengths include strong analytical skills, attention to detail, and the ability to communicate complex data effectively.
• Strong analytical skills - able to interpret and analyze data effectively

• Attention to detail - meticulous in reviewing and ensuring accuracy of data

• Effective communication of complex data - able to present findings in a clear and understandable manner
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Involve working through a business problem or scenario with the interviewer to reach a logical conclusions

Q1. Introducing your self
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Q2. Tell me about your self
Ans. 
I am a data analyst with a strong background in statistics and data visualization.
• Experienced in using statistical tools such as R and Python

• Skilled in creating insightful data visualizations using Tableau

• Proficient in SQL for data querying and manipulation

• Strong analytical and problem-solving skills

• Excellent communication and presentation abilities
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Employers will set this type of test if they need to hire a person with excellent logical skills.

Code testing refers to running each line of code with a controlled input, and verifying if it performs the expected output

Q1. Introducing the same time
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Q2. Telling me about company
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Q1. Profile screening
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Q2. Previous employment details
Ans. 
I have worked as a Data Analyst for two years at XYZ Company.
• Worked as a Data Analyst at XYZ Company for two years

• Analyzed large datasets to identify trends and patterns

• Created reports and visualizations to present data findings

• Collaborated with cross-functional teams to gather and analyze data

• Used SQL, Python, and Excel for data analysis tasks
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Q1. Technical questions on tech stack. Mostly statistics and basic ML
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Q2. Previous project details
Ans. 
Developed a predictive model to forecast customer churn in a telecommunications company.
• Used machine learning algorithms such as logistic regression and random forest.

• Analyzed customer data including demographics, usage patterns, and customer service interactions.

• Achieved an accuracy of 85% in predicting customer churn.

• Provided actionable insights to the company to reduce churn rate and improve customer retention.
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Need to frame questions and their answers on data provided

Q1. Final salary discussion
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Q1. Optimization of Service center model design
Ans. 
Optimizing service center model design involves analyzing data to identify areas for improvement and implementing changes to increase efficiency and customer satisfaction.
• Analyze data on customer needs and service center performance

• Identify areas for improvement, such as wait times or staffing levels

• Implement changes to increase efficiency and customer satisfaction, such as adding self-service options or adjusting staf...read more
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Q2. Python related questions
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Q1. Scenario based questions
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Round duration - 45 Minutes
Round difficulty - Medium

Q1. Design a class booking application for students.
Ans. 
A class booking application for students to schedule and manage their classes.
• Create a class booking system where students can view available classes, book classes, and manage their schedule.

• Include features like class search, class details, booking confirmation, and calendar view.

• Implement user authentication to ensure only registered students can book classes.

• Allow students to cancel or reschedule classes with proper...read more
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Round duration - 60 Minutes
Round difficulty - Medium

The interviewer understand the current problem statement I was working on. 
Asked the clarifying questions and alternative approaches to solve the same and their tradeoffs.
Also, asked about the technologies I was using in depth and reason for choosing the same.

Q1. 
Gas Tank Problem Statement
You have a car with a gas tank of infinite capacity. There are 'N' gas stations located along a circular route, numbered from 0 to N-1. You begin your journey with an empty tank...read more
Ans. 
Find the starting gas station index to complete a circular route with gas and cost arrays.
• Iterate through gas stations, keeping track of gas remaining after each station

• If gas remaining is negative, reset starting station to current station + 1

• If total gas remaining at the end is greater than or equal to total cost, return starting station index
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Round duration - 45 Minutes
Round difficulty - Medium

This round was their with the CTO and was mostly the culture fitment round.

Round duration - 30 Minutes
Round difficulty - Easy

This round was with the cofounder and was mostly culture fitment.