Bajaj Finserv Data Analyst Interview Questions and Answers

Q1. He asked me mainly sql questions
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Q2. After sql , he asked tableau questions
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Q1. Get the maximum salary of the employee from the employee and department table
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Q2. Explain the data analysis process that you would follow for employee salary table
Ans. 
The data analysis process for an employee salary table involves data cleaning, exploration, visualization, and modeling.
• Start by cleaning the data to remove any duplicates, missing values, or outliers.

• Explore the data by calculating basic statistics like mean, median, and standard deviation.

• Visualize the data using histograms, box plots, or scatter plots to identify patterns or trends.

• Perform statistical modeling to an...read more
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Q3. Explain the challenges you faced in your project
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I faced challenges in managing large datasets and ensuring data accuracy in my project.
• Managing large volumes of data from multiple sources

• Ensuring data accuracy and consistency

• Dealing with missing or incomplete data

• Handling data cleaning and preprocessing tasks

• Addressing technical issues with data storage or processing tools
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Q1. Different joins
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Q2. Case study
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Revenue impact for casino

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Q1. What is Index ?
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An index is a data structure that improves the speed of data retrieval operations on a database table.
• Indexes are used to quickly locate data without having to search every row in a database table.

• They are created on one or more columns of a table to speed up query processing.

• Examples of indexes include primary keys, unique keys, and non-unique indexes.
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Q2. What is RE Index ?
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RE Index is a measure used in statistics to compare the relative importance of different variables in a regression model.
• RE Index stands for Relative Importance Index.

• It is used to determine the contribution of each independent variable to the overall variance explained by the regression model.

• A higher RE Index value indicates a greater importance of the variable in predicting the dependent variable.

• RE Index values ran...read more
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Q3. What is PE Ratio ?
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PE Ratio is a financial metric used to evaluate a company's stock price relative to its earnings.
• PE Ratio is calculated by dividing the current stock price by the earnings per share (EPS).

• It is used by investors to determine if a stock is overvalued or undervalued.

• A high PE Ratio may indicate that a stock is overvalued, while a low PE Ratio may suggest it is undervalued.

• For example, if a company's stock is trading at $...read more
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