Air India Interview Questions, Process, and Tips

Data science, ML concepts, statistics, python output

Q1. What does correlation mean? what is the interpretation if the correlation is 0?
Ans. 
Correlation measures the strength and direction of a relationship between two variables. A correlation of 0 indicates no linear relationship.
• Correlation measures the degree to which two variables move in relation to each other. It ranges from -1 to 1.

• A correlation of 0 means there is no linear relationship between the variables. They are not related in a linear fashion.

• For example, if the correlation between hours of s...read more
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Q2. What is collinearity, how to handle it? also for multicollinearity
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Q3. How to evaluate regression models? explain r squared and adjusted r squared and difference between them
Ans. 
Regression models can be evaluated using R squared and adjusted R squared to measure the goodness of fit.
• R squared measures the proportion of the variance in the dependent variable that is predictable from the independent variables.

• Adjusted R squared adjusts for the number of predictors in the model, providing a more accurate measure of goodness of fit.

• R squared can be artificially inflated by adding more predictors, w...read more
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Q4. Explain regularization techniques, difference between ridge and lasso?
Ans. 
Regularization techniques help prevent overfitting in machine learning models. Ridge regression adds L2 regularization, while Lasso regression adds L1 regularization.
• Regularization techniques help prevent overfitting by adding a penalty term to the loss function.

• Ridge regression adds the squared magnitude of coefficients as penalty term (L2 regularization).

• Lasso regression adds the absolute magnitude of coefficients as...read more
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Q5. Explain working of decision trees, how to select parent and child nodes, gini impurity, etc?
Ans. 
Decision trees are a popular machine learning algorithm used for classification and regression tasks.
• Decision trees are a flowchart-like structure where each internal node represents a feature or attribute, each branch represents a decision rule, and each leaf node represents the outcome.

• To select parent and child nodes, the algorithm calculates the best split at each node based on criteria like Gini impurity or inform...read more
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Q6. Bagging and boosting and their difference, what is ensemble models, how to handle overfitting, explain precision recall roc curve
Ans. 
Explanation of bagging, boosting, ensemble models, handling overfitting, and precision-recall-ROC curve.
• Bagging (Bootstrap Aggregating) involves training multiple models on different subsets of the training data and combining their predictions through averaging or voting.

• Boosting involves training multiple models sequentially, with each model correcting the errors of its predecessor.

• Ensemble models combine multiple ind...read more
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Q7. Create dictionary in python from 2 list and key values, sql query for window functions-Rank(), all joins in sql
Ans. 
Creating dictionary in Python from 2 lists, using window functions and joins in SQL
• To create a dictionary in Python from 2 lists and key values, you can use the zip() function

• Example: dict(zip(keys_list, values_list))

• For SQL window functions like Rank(), you can use the OVER() clause

• Example: SELECT column1, column2, RANK() OVER(ORDER BY column3) AS rank_column FROM table_name

• For SQL joins, you can use INNER JOIN, LEFT ...read more
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Q1. To know about the job
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Q2. To know about the job details
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Q1. And to know about the salary
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Q1. If I selected where was my first work place
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Q1. Mostly I want in Chennai
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My name is killi Lakshmi durga. Iam studying inter 2nd year

Q1. What's the job how is it selary
Ans. What's the job how is it selary
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Q2. Which is the city or villages
Ans. Which is the city or villages
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Q3. How many day's in the job
Ans. How many day's in the job
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Q4. What is the best job
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Q5. Which is I am joining day
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Q1. Tell us about yourself
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Q2. How become cabin crew
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Q1. Self introduction and technical questions your work related
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Q2. Situation based questions
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Q1. Technical questions
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Q2. How you manage customer complain on Arrival (MHB)
Ans. 
I manage customer complaints on arrival by actively listening, empathizing, and resolving their issues promptly.
• Actively listen to the customer's complaint without interrupting

• Empathize with the customer and acknowledge their frustration

• Apologize for any inconvenience caused and assure them that their complaint will be addressed

• Resolve the issue promptly by offering a solution or escalating it to the appropriate depart...read more
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Q1. Only paper work
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Q1. India s longest airport place name?
Ans. 
The longest airport place name in India is Maharana Pratap International Airport, Udaipur.
• The airport is located in Udaipur, a city in the state of Rajasthan.

• It is named after Maharana Pratap, a legendary king of Mewar.

• The airport has both domestic and international terminals.

• It is operated by the Airport Authority of India (AAI).
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Q2. India s smallest airport in india?
Ans. 
The smallest airport in India is the Keshod Airport located in Gujarat.
• Keshod Airport has a single runway and serves only domestic flights.

• It is located in the Junagadh district of Gujarat.

• The airport is operated by the Airports Authority of India.

• Keshod Airport has a capacity of handling up to 50 passengers at a time.
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Q3. In 2023 most satisfied with passangers in airport name?
Ans. 
It is difficult to predict which airport will have the most satisfied passengers in 2023.
• Passenger satisfaction can be influenced by various factors such as airport facilities, staff behavior, and flight delays.

• Airports can improve passenger satisfaction by providing better amenities, efficient check-in and security processes, and timely flight updates.

• Passenger feedback and surveys can help airports identify areas for...read more
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Q4. India s most busy airport place name?
Ans. 
The busiest airport in India is Indira Gandhi International Airport located in New Delhi.
• Indira Gandhi International Airport handles over 70 million passengers annually

• It is the largest airport in India in terms of passenger and cargo traffic

• The airport serves as a hub for several airlines including Air India, IndiGo, and Vistara
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Q5. What is your name?
Ans. 
My name is John Smith.
• My name is John Smith.

• I go by the name John Smith.

• You can call me John Smith.
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Any 2 Airlines company names tell ?

Yours salary expectation?

Q1. This job are u liked?
Ans. 
Yes, I enjoy this job as a Junior Customer Service Executive.
• I find satisfaction in helping customers and resolving their issues.

• I enjoy interacting with different people and building relationships.

• I am motivated by the opportunity to provide excellent customer service.

• I appreciate the chance to learn and grow in this role.

• I am excited about the challenges and responsibilities that come with this position.
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Q1. Howmany airlines name? U did?
Ans. 
I have experience with multiple airlines.
• I have worked with airlines such as Delta, United, and American.

• I am familiar with international airlines like Emirates and British Airways.

• I have also interacted with budget airlines like Southwest and Ryanair.
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Q1. What is the airlnes?
Ans. 
The airlines refer to companies that provide air transportation services for passengers and cargo.
• Airlines operate flights to various destinations around the world.

• They offer different classes of service such as economy, business, and first class.

• Examples of airlines include Delta, United, Emirates, and British Airways.
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