Dnata Business Intelligence Analyst Interview Questions and Answers

Basic coding questions

Q1. Explain in detail about current project? Reason for choosing the algorithm, evaluation metrics and analysis of data
Ans. 
Developed a predictive model for customer churn using logistic regression
• Chose logistic regression for its interpretability and ability to handle binary outcomes

• Evaluated model performance using accuracy, precision, recall, and F1 score

• Analyzed customer data including demographics, purchase history, and customer service interactions
Answered by AI
Add your answer
Q2. Python and sql coding questions - basic
Add your answer
Q3. Linear regression, xgboost, precision, recall, F1 Score,Correlation
Add your answer

Q1. Picks one of the Projects to discuss the structure and methodology.
Add your answer
Q2. Reverse a String
Ans. 
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
Answered by AI
Add your answer
Q3. Basic ML Questions about Resume Projects
Add your answer
Q4. What is Regularization?
Ans. 
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
Answered by AI
Add your answer
Q5. Basics about Forescasting.
Add your answer

Hackerank Assignment

Q1. Coding and ML questions
Add your answer

Q1. About projects and questions related to that
Add your answer

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.
Add your answer

Q1. Behavioral question was asked by manager.
Add your answer

Q1. CTC discussion was done
Add your answer