Zen3 Info Solutions Data Analyst Interview Questions and Answers

Q1. What do data analysts do?
Ans. 
Data analysts collect, process, and analyze data to help organizations make informed decisions.
• Collect and organize data from various sources

• Clean and preprocess data to ensure accuracy

• Analyze data using statistical techniques and tools

• Create visualizations and reports to present findings

• Identify trends and patterns in data to provide insights

• Help organizations make data-driven decisions
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Q2. What is your process for cleaning data?
Ans. 
My process for cleaning data involves identifying and handling missing values, removing duplicates, standardizing formats, and detecting outliers.
• Identify and handle missing values by either imputing them with mean/median values or removing the rows/columns with missing data.

• Remove duplicates to ensure each data point is unique.

• Standardize formats such as date formats, text case, and units of measurement.

• Detect and han...read more
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Object Detection on a subset of COCO dataset having Cars and Person classes

Q1. Technical discussion on Machine Learning, Deep Learning Concepts and coding round.
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Q1. Technical discussion on Deep Learning and Computer Vision.
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Q1. SQL related basic theory questions
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Q2. SQL coding test
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Q1. Explain process in adf
Ans. 
ADF stands for Azure Data Factory, a cloud-based data integration service that allows you to create, schedule, and manage data pipelines.
• ADF allows you to create data-driven workflows for orchestrating and automating data movement and data transformation.

• You can use ADF to ingest data from various sources, process and transform the data, and then publish the data to different destinations.

• ADF supports a wide range of d...read more
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