GoMechanic Data Analyst Interview Questions and Answers

Q1. Joins, operations questions not data analysis questions
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Q2. Customer retention case study
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Q3. Cumulative sum for given table
Ans. 
To calculate cumulative sum for a given table
• Sort the table in ascending order based on the column you want to calculate the cumulative sum for

• Add a new column to the table to store the cumulative sum

• Iterate through each row of the table and calculate the cumulative sum by adding the current row's value to the previous row's cumulative sum

• Store the cumulative sum in the new column for each row
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Q4. Do you have experience in operations/data entry role
Ans. 
Yes, I have experience in both operations and data entry roles.
• I have worked as a data entry operator for a pharmaceutical company where I was responsible for entering patient data into the system.

• In my previous role as an operations analyst, I was responsible for analyzing data and creating reports for the management team.

• I have experience using various data entry software such as Microsoft Excel and Google Sheets.

• I a...read more
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Q5. As a data analyst can you do data entry work also?
Ans. 
Yes, I can do data entry work as a data analyst.
• Data entry work is a part of data analysis process.

• I have experience in data entry work and can perform it efficiently.

• Data entry work includes entering data into spreadsheets, databases, or other software.

• I understand the importance of accurate data entry for effective analysis.
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Q6. Normal excel statements like if, vlookup, xlookups etc.,
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Q1. Screening questions
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Q2. Name, age, qualification, prior experience etc
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Operation questions like vlookups, Hlookups, xlookups etc,.

Reporting questions like pivot tables, typing speed, power pivots, pricing sheet preparation

SQL queries like joins, aggregation functions, filters etc,.

Q1. Advanced analytics and finding trends and patterns with MH - operations data
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Q2. How fast can you prepare a bar chart with product operations data
Ans. 
I can prepare a bar chart with product operations data within a few minutes.
• I have experience using data visualization tools like Tableau, Power BI, or Excel to quickly create bar charts.

• I am proficient in organizing and cleaning data to ensure accurate representation in the chart.

• I can customize the chart with relevant labels, colors, and titles to make it visually appealing and easy to understand.
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Q3. How can I do merge multiple excel files together
Ans. 
You can merge multiple Excel files together using the 'Consolidate' feature in Excel.
• Open Excel and go to the 'Data' tab

• Click on 'Consolidate' in the 'Data Tools' group

• Select the files you want to merge and choose the desired options

• Click 'OK' to merge the files together
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Q1. Tell me about yourself.
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Q1. What’s your previous experience
Ans. 
I have 3 years of experience as a data analyst in the finance industry.
• Worked with large datasets to extract meaningful insights

• Performed data cleaning, transformation, and visualization

• Created and maintained dashboards and reports for stakeholders

• Conducted statistical analysis and built predictive models

• Collaborated with cross-functional teams to identify business opportunities
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Q2. What’s your skills for the current role
Ans. 
I have strong skills in data analysis, including proficiency in statistical analysis, data visualization, and programming languages such as Python and SQL.
• Proficient in statistical analysis techniques

• Skilled in data visualization using tools like Tableau

• Strong programming skills in Python and SQL

• Experience with data cleaning and preprocessing

• Ability to interpret and communicate insights from data

• Familiarity with machin...read more
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Q1. Previous company experience and current company roles and responsibilities
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Q1. Interviewer asked me basic SQL questions
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Q2. In the second technical round he asked me advanced SQL topics (Windows Functions, Joins & Subqueries)
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In the second technical round interview asked me about advanced sql topics, theory questions and two coding questions in joins and window functions.

Q1. SQL query use join
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