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eClerx Data Analyst Interview Questions and Answers
24 Interview questions
VLOOKUP is a function in Excel that searches for a value in the first column of a table and returns a value in the same row from a specified column.
Syntax: VLOOKUP(lookup_value, table_array, col_index_num, [range_lookup])
lookup_value: The value to search for in the first column of the table.
table_array: The range of cells that contains the data.
col_index_num: The column number in the table from which to retrieve t...
Queries are requests for data or information from a database, categorized into various types based on their purpose.
SELECT Query: Retrieves data from one or more tables. Example: SELECT * FROM employees;
INSERT Query: Adds new records to a table. Example: INSERT INTO employees (name, age) VALUES ('John', 30);
UPDATE Query: Modifies existing records. Example: UPDATE employees SET age = 31 WHERE name = 'John';
DELETE Q...
An RDBMS is a software system that manages relational databases, allowing data to be stored, modified, and queried efficiently.
Data is organized in tables (relations) consisting of rows and columns.
Supports SQL (Structured Query Language) for querying and managing data.
Ensures data integrity through constraints like primary keys and foreign keys.
Examples include MySQL, PostgreSQL, Oracle Database, and Microsoft SQ...
JOIN combines rows from two or more tables based on related columns; UNION combines results from two or more SELECT queries.
JOIN is used to retrieve related data from multiple tables based on a common field.
Example of JOIN: SELECT * FROM TableA JOIN TableB ON TableA.id = TableB.a_id;
UNION combines the result sets of two or more SELECT statements, removing duplicates.
Example of UNION: SELECT column1 FROM TableA UNI...
What people are saying about eClerx
CSV stands for Comma-Separated Values.
CSV is a file format used to store tabular data in plain text.
Each line in a CSV file represents a row of data, with columns separated by commas.
CSV files can be easily imported and exported in spreadsheet software like Excel.
Example: 'name,age,city' on the first line, followed by 'John,25,New York' on the second line.
DML commands are used to manipulate data in a database.
DML stands for Data Manipulation Language
Common DML commands include INSERT, UPDATE, DELETE
Example: INSERT INTO table_name (column1, column2) VALUES (value1, value2)
RDBMS stands for Relational Database Management System, a software for managing relational databases using structured query language (SQL).
RDBMS organizes data into tables, which can be linked by relationships.
Examples include MySQL, PostgreSQL, and Oracle Database.
Data is accessed and manipulated using SQL, a standard programming language.
RDBMS supports ACID properties (Atomicity, Consistency, Isolation, Durabili...
I conduct data analysis by collecting, cleaning, analyzing, and interpreting data to derive insights and make data-driven decisions.
Collect relevant data from various sources
Clean and preprocess data to ensure accuracy and consistency
Use statistical methods and tools to analyze data
Visualize data using charts, graphs, and dashboards
Interpret results and communicate findings to stakeholders
Data analysis is the process of inspecting, cleaning, transforming, and modeling data to discover useful information, draw conclusions, and make decisions.
Data analysis involves collecting and organizing data sets.
It includes cleaning and processing data to ensure accuracy.
Statistical analysis and data visualization are key components of data analysis.
Data analysis helps in identifying trends, patterns, and insigh...
I have extensive experience in data analysis, focusing on transforming data into actionable insights for decision-making.
Worked at XYZ Corp, analyzing sales data to identify trends, resulting in a 15% increase in quarterly revenue.
Utilized SQL and Python for data extraction and manipulation, improving reporting efficiency by 30%.
Collaborated with cross-functional teams to develop dashboards using Tableau, enhancin...
eClerx Data Analyst Interview Experiences
20 interviews found
Anonymous
Selected
(6 Questions)
- Q1. Whats your name?
- Ans.
My name is John Doe.
Full name is John Doe
Common first and last name combination
Easy to remember and pronounce
- Q2. Csv stand for?
- Ans.
CSV stands for Comma-Separated Values.
CSV is a file format used to store tabular data in plain text.
Each line in a CSV file represents a row of data, with columns separated by commas.
CSV files can be easily imported and exported in spreadsheet software like Excel.
Example: 'name,age,city' on the first line, followed by 'John,25,New York' on the second line.
- Q3. Tell me something about yourself?
- Ans.
Hello,First of all thankyou very much for giving opportunity to introduced in front of you.I am harsh.I hail from ambala cantt but currently live in defence enclave.I am a fresher. I live in nuclear family.There are 5 of us in my family.I am a object oriented person. I have a master degree in computer application from kurukshetra university.I have done 6 month course in data analyst from chandigarh.I enjoy dancing,Sing...
- Q4. Sql stand for?
- Q5. Write a dml commands?
- Ans.
DML commands are used to manipulate data in a database.
DML stands for Data Manipulation Language
Common DML commands include INSERT, UPDATE, DELETE
Example: INSERT INTO table_name (column1, column2) VALUES (value1, value2)
- Q6. Rdbms stands for?
- Ans.
RDBMS stands for Relational Database Management System, a software for managing relational databases using structured query language (SQL).
RDBMS organizes data into tables, which can be linked by relationships.
Examples include MySQL, PostgreSQL, and Oracle Database.
Data is accessed and manipulated using SQL, a standard programming language.
RDBMS supports ACID properties (Atomicity, Consistency, Isolation, Durability) f...
I applied via Job Portal and was interviewed in Apr 2024. There were 2 interview rounds.
(1 Question)
- Q1. General discussion of background and technical interview availability.Expected Salary,current salary
(8 Questions)
- Q1. Tell me about yourself.
- Ans.
I am a data analyst with a passion for transforming data into actionable insights, skilled in SQL, Python, and data visualization.
Educational background in Statistics and Data Science.
Experience with SQL for database management and querying.
Proficient in Python for data analysis and automation.
Skilled in data visualization tools like Tableau and Power BI.
Worked on a project analyzing customer behavior, leading to a 15%...
- Q2. Which project have you recently worked on?
- 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.
- 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
- Q5. Which databases have you worked on?
- Ans.
I have worked on databases such as MySQL, SQL Server, and MongoDB.
MySQL
SQL Server
MongoDB
- 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'.
- 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.
- 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.
Interview Preparation Tips
- Python
- R programming
- Database
- Lists
- Dictionaries
- Data Structures
Focus on accessing elements from different structures and performing basic operations on them.
Skills evaluated in this interview
Selected
I applied via Referral and was interviewed in Sep 2024. There was 1 interview round.
(2 Questions)
- Q1. What is data analysis?
- Q2. How do you conduct data analysis?
Interview Preparation Tips
Shubhangi Dhale
(1 Question)
- Q1. About excel like conditional formatting some formulae’s and concepts
I applied via Referral and was interviewed in May 2024. There was 1 interview round.
(1 Question)
- Q1. Privious experiance
Good maths English communication
(5 Questions)
- Q1. Myself and aptitude
- Q2. Myself and location
- Q3. Last company and roles
- Q4. Education and background
- Q5. Hobbies and hobbies
(1 Question)
- Q1. Why excel is used for data analyst?
- Ans.
Excel is used for data analysis due to its user-friendly interface, powerful data manipulation capabilities, and ability to create visualizations.
Excel allows for easy data entry and manipulation, making it accessible for users of all skill levels.
It has powerful functions and formulas for data analysis, such as VLOOKUP, SUMIF, and PivotTables.
Excel can create visualizations like charts and graphs to help analyze and p...
(1 Question)
- Q1. Tell me about yourself?
Skills evaluated in this interview
Selected
I appeared for an interview before Jul 2024, where I was asked the following questions.
- Q1. Whatis the formula of V-Lookup
- Ans.
VLOOKUP is a function in Excel that searches for a value in the first column of a table and returns a value in the same row from a specified column.
Syntax: VLOOKUP(lookup_value, table_array, col_index_num, [range_lookup])
lookup_value: The value to search for in the first column of the table.
table_array: The range of cells that contains the data.
col_index_num: The column number in the table from which to retrieve the va...
- Q2. About your self.
Interview Preparation Tips
laja beta
Selected
I appeared for an interview before Apr 2024, where I was asked the following questions.
- Q1. What is a Relational Database Management System (RDBMS)?
- Ans.
An RDBMS is a software system that manages relational databases, allowing data to be stored, modified, and queried efficiently.
Data is organized in tables (relations) consisting of rows and columns.
Supports SQL (Structured Query Language) for querying and managing data.
Ensures data integrity through constraints like primary keys and foreign keys.
Examples include MySQL, PostgreSQL, Oracle Database, and Microsoft SQL Ser...
- Q2. What are the different types of queries?
- Ans.
Queries are requests for data or information from a database, categorized into various types based on their purpose.
SELECT Query: Retrieves data from one or more tables. Example: SELECT * FROM employees;
INSERT Query: Adds new records to a table. Example: INSERT INTO employees (name, age) VALUES ('John', 30);
UPDATE Query: Modifies existing records. Example: UPDATE employees SET age = 31 WHERE name = 'John';
DELETE Query:...
- Q3. What is the difference between a JOIN and a UNION in SQL?
- Ans.
JOIN combines rows from two or more tables based on related columns; UNION combines results from two or more SELECT queries.
JOIN is used to retrieve related data from multiple tables based on a common field.
Example of JOIN: SELECT * FROM TableA JOIN TableB ON TableA.id = TableB.a_id;
UNION combines the result sets of two or more SELECT statements, removing duplicates.
Example of UNION: SELECT column1 FROM TableA UNION SE...
Interview Preparation Tips
Selected
I applied via Approached by Company and was interviewed before Sep 2023. There was 1 interview round.
(2 Questions)
- Q1. Sql based questions
- Q2. Pivot table in excel
- Ans.
A pivot table in Excel is a powerful tool for summarizing and analyzing data.
Pivot tables allow you to reorganize and summarize selected columns and rows of data in a spreadsheet.
You can easily group data, calculate totals, averages, and other statistics, and create custom calculations.
Pivot tables are dynamic and can be easily updated as the source data changes.
They are useful for analyzing large datasets and identify...
Skills evaluated in this interview
eClerx Interview FAQs
Some of the top questions asked at the eClerx Data Analyst interview -
The duration of eClerx Data Analyst interview process can vary, but typically it takes about less than 2 weeks to complete.
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