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Alteryx data processing and reporting
I applied via Campus Placement
29 questions with normal level difficulty
I applied via Referral and was interviewed in Sep 2024. There was 1 interview round.
Incremental refresh is a process of updating only new or changed data in a dataset.
Identify the key columns that can be used to track changes in the data
Use date or timestamp columns to filter out new or updated records
Implement a process to regularly check for new data and update the dataset accordingly
Data warehouse is structured and used for reporting and analysis, while data lake is unstructured and used for exploration and experimentation.
Data warehouse stores structured data for easy access and analysis.
Data lake stores unstructured and raw data for exploration and experimentation.
Data warehouse is typically used for reporting and business intelligence.
Data lake is used for data science and machine learning proj...
I appeared for an interview in May 2025, where I was asked the following questions.
A data analyst interprets data to help organizations make informed decisions through analysis and visualization.
Collects and cleans data from various sources, e.g., databases, spreadsheets.
Analyzes data trends and patterns, such as sales growth over time.
Creates visualizations like charts and graphs to present findings, e.g., using Tableau or Power BI.
Generates reports to communicate insights to stakeholders, aiding in...
I chose data analysis to leverage data-driven insights for informed decision-making and impactful problem-solving.
Passion for uncovering patterns: I enjoy analyzing data to find trends, like identifying customer preferences in retail.
Impactful decision-making: Data analysis helps organizations make informed choices, such as optimizing supply chain logistics.
Diverse applications: Data analysis is applicable in various f...
Future data analysts should focus on continuous learning, technical skills, and domain knowledge to excel in their careers.
Stay updated with the latest data analysis tools like Python, R, and SQL.
Develop strong statistical skills to interpret data accurately; for example, understanding p-values.
Gain domain knowledge relevant to your industry, such as finance or healthcare, to provide better insights.
Practice data visua...
I applied via Walk-in and was interviewed in Aug 2024. There was 1 interview round.
I applied via Walk-in and was interviewed in May 2024. There were 3 interview rounds.
ADSL is a type of internet connection technology, while Blob storage is a type of cloud storage service.
ADSL (Asymmetric Digital Subscriber Line) is a type of broadband connection that uses existing telephone lines to transmit data.
Blob storage is a type of cloud storage service provided by platforms like Azure, AWS, and Google Cloud.
ADSL typically has slower upload speeds compared to download speeds, while Blob storag...
I applied via Naukri.com and was interviewed in Dec 2024. There was 1 interview round.
Pandas, Jumpy, and Matplotlib have been revitalized, while Power BI has contributed to the valuation of businesses.
Calculate avg value and standard deviation from given data
Calculate the average value by summing all data points and dividing by the total number of data points
Calculate the standard deviation by finding the square root of the average of the squared differences between each data point and the mean
Example: Data points - 5, 7, 9, 11. Average = (5+7+9+11)/4 = 8. Standard deviation = sqrt(((5-8)^2 + (7-8)^2 + (9-8)^2 + (11...
What people are saying about HCLTech
The duration of HCLTech Data Analyst interview process can vary, but typically it takes about less than 2 weeks to complete.
based on 27 interview experiences
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