AVASOFT Data Analyst Trainee Interview Questions and Answers

It was well designed

Q1. Basic Questions about data warehousing
Add your answer
Q2. Dbt Scenarios
Add your answer

Q1. Basicn details to check for qualifications
Add your answer

Q1. About my projects
Add your answer

Q1. More details about ML models
Add your answer

3 question were asked in 90 min time

Q1. What is precison ?
Ans. 
Precision is the ratio of correctly predicted positive observations to the total predicted positive observations.
• Precision is calculated as TP / (TP + FP), where TP is true positives and FP is false positives.

• It measures the accuracy of positive predictions made by the model.

• A high precision indicates that the model is good at predicting positive cases without many false positives.

• For example, in a binary classificatio...read more
Answered by AI
Add your answer
Q2. What is large lang. model ?
Ans. 
A large language model is a type of artificial intelligence model that is capable of understanding and generating human language at a large scale.
• Large language models use deep learning techniques to process and generate text.

• Examples include GPT-3 (Generative Pre-trained Transformer 3) and BERT (Bidirectional Encoder Representations from Transformers).
Answered by AI
Add your answer

Q1. Cache vs persist
Ans. 
Cache is used for temporary storage of data in memory, while persist is used for saving data to disk for long-term storage.
• Cache is typically faster as it stores data in memory for quick access.

• Persist saves data to disk for durability and long-term storage.

• Cache is often used for temporary data that can be recomputed if lost, while persist is used for important data that needs to be retained.

• Examples: Using cache for ...read more
Answered by AI
Add your answer
Q2. Broadcast join and other optimization techniques
Add your answer

Q1. Sql window function
Add your answer
Q2. Spark architecture, dataframe vs rdd
Add your answer
Q3. Python reverse sentence
Ans. 
Reverse a sentence using Python
• Split the sentence into words using split() method

• Reverse the list of words using list slicing

• Join the reversed list of words back into a sentence using join() method
Answered by AI
Add your answer
Q4. Join based on nulls in sql
Add your answer

Q1. Tell me about your self?
Add your answer
Q2. What technology & tools u know ? And basic questions regarding that topics ?
Add your answer

Q1. Job culture and job responsibilities ?
Add your answer
Q2. Some questions on an analytical tools like power BI ?
Add your answer

Q1. Tell me about yourself
Add your answer
Q2. Tell me in details about your project. (Mainly the python related project)
Add your answer
Q3. Which ML algorithm did you use in your project?
Ans. 
I used the Random Forest algorithm in my project.
• Random Forest is an ensemble learning method that combines multiple decision trees to make predictions.

• It is used for both classification and regression tasks.

• Random Forest reduces overfitting and provides feature importance.

• Example: I used Random Forest to predict customer churn in a telecom company.
Answered by AI
Add your answer
Q4. What is Sql? And what is a database?
Ans. 
SQL is a programming language used for managing and manipulating relational databases. A database is a structured collection of data.
• SQL is used to retrieve, insert, update, and delete data from a database.

• A database is a software system that stores and organizes data in a structured manner.

• SQL allows users to define the structure of a database, create tables, and establish relationships between tables.

• Examples of data
Answered by AI
Add your answer
Q5. What do you understand by joins in sql?
Ans. 
Joins in SQL are used to combine rows from two or more tables based on a related column between them.
• Joins are used to retrieve data from multiple tables in a single query.

• Common types of joins include inner join, left join, right join, and full outer join.

• Joins are performed using the JOIN keyword and specifying the columns to join on.

• Joins can be used to combine tables based on matching values or non-matching values.

• ...read more
Answered by AI
Add your answer
Q6. Apply join in the above tables (Table was provided by the interviewer)
Add your answer
Q7. How many squares are their in a chess box? (Aptitude question)
Add your answer

Q1. Stored procedure sql hard
Add your answer
Q2. Easy dsa problem solving
Add your answer

Sql and python questions were there with basic logic check

Q1. Python code with funticion
Ans. 
Python code with function
• Define a function using 'def' keyword

• Include parameters inside parentheses

• Use 'return' statement to return a value from the function
Answered by AI
Add your answer
Q2. Sql with case statwment
Add your answer