Persistent Systems Data Analyst Interview Questions and Answers

Q1. About your self
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Q2. Communication skills
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Q1. Programming language
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Q2. What tools do you utilize for data analysis?
Ans. 
I utilize tools such as Excel, Python, SQL, and Tableau for data analysis.
• Excel for basic data manipulation and visualization

• Python for advanced data analysis and machine learning

• SQL for querying databases

• Tableau for creating interactive visualizations
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Q3. Pandas numpy seaborn matplot
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Data analysis of code in the context of data analysis.

Coding logical question paper.

Q1. DAX Related Syntax and Codes
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Q2. Data Modelling, SQL, Python
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Q1. No Response from HR after calling of selection after Round 1
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Basics of mathematical ability and verbal ability

Q1. Introduction - explain projects
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Q2. Data analytics explain
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Q1. What is the importance of data analysis?
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Q2. What steps should be taken to become a data analyst?
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Q1. How to perform Set Actions, LOD's
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Q1. General discussion of background and technical interview availability.Expected Salary,current salary
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Q1. Tell me about yourself.
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Q2. Which project have you recently worked on?
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Q3. How much experience do you have in python and R?
Ans. 
I have 3 years of experience in Python and 2 years in R.
• 3 years of experience in Python, used for data cleaning, analysis, and visualization.

• 2 years of experience in R, utilized for statistical analysis and data modeling.

• Proficient in using libraries like pandas, numpy, matplotlib in Python and ggplot2, dplyr in R.
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Q4. What project have you worked on in R programming?
Ans. 
I have worked on a project in R programming analyzing customer churn for a telecommunications company.
• Used R programming to clean and analyze customer data

• Created visualizations to identify patterns and trends in customer behavior

• Built predictive models to forecast customer churn rates

• Collaborated with stakeholders to present findings and recommendations
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Q5. Which databases have you worked on?
Ans. 
I have worked on databases such as MySQL, SQL Server, and MongoDB.
• MySQL

• SQL Server

• MongoDB
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Q6. Given a list of strings, find the string matching a particular pattern.
Ans. 
Find a string matching a specific pattern in a list of strings.
• Use regular expressions to search for the pattern in each string.

• Iterate through the list of strings and apply the pattern matching logic.

• Return the string that matches the pattern, if found.

• Example: List of strings - ['apple', 'banana', 'cherry'], pattern - 'ba' would return 'banana'.
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Q7. Given a list of dictionary, find the dictionary which has the count of key highest among all the dictionaries. eg: [{a:5},{b:2}.......] Now here 5 is the highest key value so it should be printed.
Ans. 
Find the dictionary with the highest count of keys in a list of dictionaries.
• Iterate through the list of dictionaries and keep track of the dictionary with the highest count of keys.

• Use a loop to count the keys in each dictionary and compare it with the current highest count.

• Return the dictionary with the highest count of keys.
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Q8. Do you have experience in converting python scripts to R?
Ans. 
Yes, I have experience in converting Python scripts to R.
• I have converted several Python scripts to R for data analysis projects.

• I am proficient in both Python and R programming languages.

• I can provide examples of projects where I have successfully converted Python scripts to R.
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Q1. I'm changing my domain because I don't see much scope for growth in my current domain and I want to make advantage of new opportunities for learning, creativity and success. Additional, I believe that the ...read more
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Q2. I understand that being asked to work for an extended number of hours comes with a good reason in the first place, so I'm ok with it.
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Q3. Over the year I have really upskilled my self. I believe based on the market standards for this particular role and my experience and skill set a salary range between 10000- 35000 would be fair and appreci...read more
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Q4. Can you share more about the day to day responsibilities of this role?
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Q5. If I am hired for this role, what would you want me to a achieve in my first two months?
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Q6. No ma'am certainly not. Before coming here, I read the job description thoroughly and I have the right skills and qualification required for the role.
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Q7. I believe a change in work environment with stimulate my creativity and drive for success.
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Q1. Basis HR questions
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Q2. Answer confidently
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Q1. Based on previous work
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Q2. Answer correctly what you had worked in your previous work
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