OneCard Data Analyst Interview Questions and Answers

Hackerrank test mostly on python and sql

Q1. SQL based questions
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Q2. Python based questions
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Sql, power Bi basic and Reporting knowledge

Sql knowledge , use of power bi

Salary discussion round

Intermediate level coding round

Q1. Project explaination
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Q2. Explain project ind detail
Ans. 
Developed a predictive analytics model to forecast customer churn for a telecommunications company.
• Collected and cleaned customer data from various sources

• Performed exploratory data analysis to identify patterns and trends

• Built a machine learning model using logistic regression to predict customer churn

• Evaluated the model's performance using metrics such as accuracy, precision, and recall
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Q1. SQL question for cte and limit
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Q2. Group by order by question and puzzle with senariobased
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Q1. Explain basic ML model
Ans. 
A basic machine learning model is a mathematical algorithm that learns patterns from data to make predictions or decisions.
• Uses labeled data to train the model

• Can be supervised or unsupervised

• Examples include linear regression, decision trees, and k-means clustering
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Q1. Case Study of zomato ?
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Q2. Some basic math questions. Simultaneous equations .
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Hackerrank test mostly on python and sql

Q1. SQL based questions
Add your answer
Q2. Python based questions
Add your answer