American Express Interview Questions, Process, and Tips

Q1. How do you define model Gini?
Ans. 
Model Gini is a measure of statistical dispersion used to evaluate the performance of classification models.
• Model Gini is calculated as twice the area between the ROC curve and the diagonal line (random model).

• It ranges from 0 (worst model) to 1 (best model), with higher values indicating better model performance.

• A Gini coefficient of 0.5 indicates a model that is no better than random guessing.

• Commonly used in credit
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Q2. How to you train XG boost model
Ans. 
XGBoost model is trained by specifying parameters, splitting data into training and validation sets, fitting the model, and tuning hyperparameters.
• Specify parameters for XGBoost model such as learning rate, max depth, and number of trees

• Split data into training and validation sets using train_test_split function

• Fit the XGBoost model on training data using fit method

• Tune hyperparameters using techniques like grid search
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Simple questions regarding your resume.

Q1. Basic question related SQL.
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Q2. What were the responsibilities and scope of your previous role?
Ans. 
Managed financial audits for various clients, ensuring compliance with regulations and identifying areas for improvement.
• Conducted financial audits for clients to assess compliance with regulations

• Identified areas for improvement in financial processes and controls

• Prepared audit reports detailing findings and recommendations

• Communicated with clients to discuss audit results and provide guidance on improving financial p
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Q1. Initial screening
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Q1. Questions around the requisite technologies
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Q1. Manager discussion
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Q1. Final round was taken by the director
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Q1. Diameter for tree
Ans. 
The diameter of a tree is the width of the tree trunk measured at breast height (4.5 feet above the ground).
• Diameter is typically measured in inches or centimeters.

• To measure the diameter of a tree, use a measuring tape or calipers at breast height.

• The formula for calculating diameter is circumference divided by pi (3.14).
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Q2. Height of tree using Tree traversal
Ans. 
Calculate the height of a tree using tree traversal algorithm.
• Use depth-first search (DFS) or breadth-first search (BFS) to traverse the tree and calculate the height.

• For DFS, recursively traverse each subtree and return the maximum height of the left and right subtrees.

• For BFS, use a queue to traverse each level of the tree and increment the height at each level.

• The height of a tree is the number of edges on the longe
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Q1. Please introduction
Ans. 
I have over 5 years of experience in corporate social responsibility, with a focus on sustainability initiatives and community engagement.
• Implemented various sustainability programs to reduce carbon footprint

• Collaborated with local communities to support education and healthcare initiatives

• Managed partnerships with NGOs to address social issues

• Organized employee volunteer programs to give back to the community
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Q2. Whats your life aim?
Ans. 
My life aim is to make a positive impact on society through corporate social responsibility initiatives.
• To work towards creating a more sustainable and equitable world

• To contribute towards social and environmental causes

• To inspire others to join in the efforts for positive change
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Q3. Fav food and why
Ans. 
My favorite food is sushi because of its fresh and unique flavors.
• I love the combination of fresh fish, rice, and seaweed in sushi rolls.

• The variety of sushi options allows for different flavors and textures in each bite.

• Sushi is a healthy choice as it is low in calories and high in protein.

• I enjoy the cultural experience of eating sushi, including using chopsticks and wasabi.

• Some of my favorite sushi rolls include spi
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Q4. Why amex not other org?
Ans. 
American Express (Amex) is chosen over other organizations for its strong commitment to corporate social responsibility and ethical business practices.
• Amex has a long history of supporting various social causes and initiatives, such as disaster relief efforts and community development projects.

• The company has a reputation for ethical business practices, transparency, and accountability in its operations.

• Amex has receiv...read more
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Q1. Questions on Core java
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Q2. Questions on project process
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