Freelancer.com Data Analyst Interview Questions and Answers

The Aptitude Test session accesses mathematical and logical reasoning abilities

Q1. What is Vlookup
Ans. 
Vlookup is a function in Excel used to search for a value in a table and return a corresponding value from another column.
• Vlookup stands for 'Vertical Lookup'

• It is commonly used in Excel to search for a value in the leftmost column of a table and return a value in the same row from a specified column

• Syntax: =VLOOKUP(lookup_value, table_array, col_index_num, [range_lookup])

• Example: =VLOOKUP(A2, B2:D10, 3, FALSE) - searc...read more
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Q2. Some IF else Question in Excel
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Q3. What does your day in your previous organization look like?
Ans. 
My day in my previous organization involved analyzing large datasets, creating reports, and presenting findings to stakeholders.
• Reviewing and cleaning large datasets to ensure accuracy

• Creating visualizations and reports to communicate insights

• Collaborating with team members to identify trends and patterns

• Presenting findings to stakeholders in meetings or presentations
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Q4. Could you share the technical skills you possess?
Ans. 
I possess strong technical skills in data analysis, including proficiency in programming languages, statistical analysis, and data visualization tools.
• Proficient in programming languages such as Python, R, SQL

• Skilled in statistical analysis and data modeling techniques

• Experience with data visualization tools like Tableau, Power BI

• Knowledge of machine learning algorithms and techniques
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Q5. Can you explain what a Pivot Table is?
Ans. 
A Pivot Table is a data summarization tool used in spreadsheet programs to analyze, summarize, and present data in a tabular format.
• Pivot tables allow users to reorganize and summarize selected columns and rows of data to obtain desired insights.

• Users can easily group and filter data, perform calculations, and create visualizations using pivot tables.

• Pivot tables are commonly used in Excel and other spreadsheet program...read more
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Q6. Find the Highest-paid employee in each department along with their salary and department name.
Ans. 
To find the highest-paid employee in each department, we need to group employees by department and then select the employee with the highest salary in each group.
• Group employees by department

• Find the employee with the highest salary in each group

• Retrieve the employee's name, salary, and department name
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Q1. Can you tell me about yourself?
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Q2. Can you provide details about your city?
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Q1. Tell me about yourself.
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Q2. What is your previous work experience?
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Q1. Some computer tasks
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Q2. Reading test
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Assignment is structured accordingly to the real time work scenarios

Q1. Advanced power bi questions which includes dax queries total sales, running sales using different filter conditions, power bi service related questions etc...
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Q2. Advanced questions of SQL queries etc...
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Q1. What is the importance of data analysis?
Ans. 
Data analysis is crucial for making informed decisions, identifying trends, and solving complex problems.
• Helps in making informed decisions based on data-driven insights

• Identifies trends and patterns that can lead to strategic business decisions

• Aids in solving complex problems by analyzing data to find root causes

• Improves efficiency and effectiveness of processes through data-driven optimizations
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Q2. What steps should be taken to become a data analyst?
Ans. 
To become a data analyst, one should focus on acquiring relevant education, gaining experience with data analysis tools, and developing strong analytical and problem-solving skills.
• Obtain a degree in a related field such as statistics, mathematics, computer science, or data science.

• Gain experience with data analysis tools such as SQL, Python, R, and Excel.

• Develop strong analytical and problem-solving skills by working ...read more
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1st round was Coading round was there

Q1. Coading round was there
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Q2. Coading round was there in the interview
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Basic questions can be attempted easily

2 coding questions edge cases were hard to find

Q1. Resume based questions and project idea breifing
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Q2. Have any questions for interviewer
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Q1. Asked regarding sql to make a table and given some queries to solve over the table
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Q2. Given easy code to solve before them very easy
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Q1. Regarding place
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Q2. Regarding night shifts
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Q1. Sql questions on windows functions, subquery
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Q2. Guesstimmate on how many cricket bat is solved in a year
Ans. 
It is difficult to accurately estimate the number of cricket bats sold in a year without specific data.
• The number of cricket bats sold in a year can vary based on factors such as seasonality, popularity of cricket, and market trends.

• One approach to estimate could be to consider the total population of cricket-playing countries and the average number of bats owned by players.

• Another approach could be to look at the sale...read more
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