British Airways Data Science Intern Interview Questions and Answers

Q1. Picks one of the Projects to discuss the structure and methodology.
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Q2. Reverse a String
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Reverse a given string
• Use built-in functions like reverse() or slice() in Python

• Iterate through the string in reverse order and append characters to a new string

• Convert the string to an array of characters, reverse the array, and join it back into a string
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Q3. Basic ML Questions about Resume Projects
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Q4. What is Regularization?
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Regularization is a technique used to prevent overfitting in machine learning models by adding a penalty term to the loss function.
• Regularization helps to reduce the complexity of the model by penalizing large coefficients.

• It adds a penalty term to the loss function, such as L1 (Lasso) or L2 (Ridge) regularization.

• Regularization helps to improve the generalization of the model by discouraging overfitting.

• Examples of re...read more
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Q5. Basics about Forescasting.
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Hackerank Assignment

Q1. Coding and ML questions
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Q1. About projects and questions related to that
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Q1. How regularisation works in random forest
Ans. 
Regularisation in random forest helps prevent overfitting by controlling the complexity of the model.
• Regularisation in random forest is achieved by limiting the depth of the trees in the forest.

• It helps prevent overfitting by reducing the complexity of the model and improving generalization.

• Regularisation parameters like max_depth, min_samples_split, and min_samples_leaf can be tuned to control the complexity of the mo
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Based on different scenarios they interviewed me

Q1. How comfortable I am moving to qatar
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Q2. Salary expectstion
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Q1. What kind of project you have done give some brief. How you will avoid over fiting to model. How will you handle missing data points in a data frame. Why you want to join our company.
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Q1. Behavioral question was asked by manager.
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Q1. CTC discussion was done
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