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LatentView Analytics Interview Questions and Answers
25 Interview questions
Databricks is a unified data analytics platform that includes components like Databricks Workspace, Databricks Runtime, and Databricks Delta.
Databricks Workspace: Collaborative environment for data science and engineering teams.
Databricks Runtime: Optimized Apache Spark cluster for data processing.
Databricks Delta: Unified data management system for data lakes.
Gini index is a measure of impurity used in decision trees for variable selection.
Gini index ranges from 0 (pure node) to 0.5 (impure node)
Variables with lower Gini index are preferred for splitting
Higher Gini index indicates higher impurity and less predictive power
SQL commands include SELECT, INSERT, UPDATE, DELETE, CREATE, and DROP.
SELECT: retrieves data from a database
INSERT: adds new records to a table
UPDATE: modifies existing records in a table
DELETE: removes records from a table
CREATE: creates a new table, view, or index
DROP: deletes a table or index
SQL Queries using Joins and sub-queries
Joins are used to combine rows from different tables based on a related column
Sub-queries are queries nested within another query
Joins and sub-queries can be used together to retrieve specific data from multiple tables
Implementing logics in a use case study to analyze data and derive insights.
Identify the problem statement and objectives of the study
Collect relevant data and clean it for analysis
Apply statistical and machine learning techniques to derive insights
Interpret the results and communicate findings to stakeholders
LatentView Analytics Interview Experiences
63 interviews found
TADEPALLI SASIDHAR
Selected
I applied via Campus Placement
Gamification round Game gamification
Data analytics related topic
(1 Question)
- Q1. Data data data related
(1 Question)
- Q1. Case study related questions
(1 Question)
- Q1. Hr related questions culture fit questions
(1 Question)
- Q1. Supply chain related questions
Anonymous
(4 Questions)
- Q1. Components of Databricks
- Ans.
Databricks is a unified data analytics platform that includes components like Databricks Workspace, Databricks Runtime, and Databricks Delta.
Databricks Workspace: Collaborative environment for data science and engineering teams.
Databricks Runtime: Optimized Apache Spark cluster for data processing.
Databricks Delta: Unified data management system for data lakes.
- Q2. How to read a json file
- Ans.
To read a JSON file, use a programming language's built-in functions or libraries to parse the file and extract the data.
Use a programming language like Python, Java, or JavaScript to read the JSON file.
Import libraries like json in Python or json-simple in Java to parse the JSON data.
Use functions like json.load() in Python to load the JSON file and convert it into a dictionary or object.
Access the data in the JSON fi...
- Q3. Second highest salary SQL
- Ans.
To find the second highest salary in SQL, use the MAX function with a subquery or the LIMIT clause.
Use the MAX function with a subquery to find the highest salary first, then use a WHERE clause to exclude it and find the second highest salary.
Alternatively, use the LIMIT clause to select the second highest salary directly.
Make sure to handle cases where there may be ties for the highest salary.
- Q4. How to configure the spark while creating the cluster
- Ans.
Spark cluster configuration involves setting up memory, cores, and other parameters for optimal performance.
Specify the number of executors and executor memory
Set the number of cores per executor
Adjust the driver memory based on the application requirements
Configure shuffle partitions for efficient data processing
Enable dynamic allocation for better resource utilization
Anish Mukherjee
Selected
I applied via Approached by Company and was interviewed in Sep 2024. There was 1 interview round.
(2 Questions)
- Q1. Alteryx Development Questions
- Q2. Alteryx Gallery Questions
(2 Questions)
- Q1. SQL based questions
- Q2. Logic based questions
(2 Questions)
- Q1. Situation based questions
- Q2. Questions related to company
Selected
I applied via Campus Placement
Normal Aptitude Test
Python or SQL coding round
pradeep reddy karra
(2 Questions)
- Q1. Write a query to obtain the third transaction of every user
- Ans.
Query to retrieve the third transaction of every user
Use a subquery to rank the transactions for each user
Filter the results to only include the third transaction for each user
- Q2. Write a query that outputs the name of the credit card and how many cards are issued in it's launch month
- Ans.
Query to output the name of credit card and number of cards issued in launch month
Use GROUP BY to group by launch month
Count the number of cards issued in each launch month
Select the name of the credit card and the count of cards issued
Skills evaluated in this interview
(2 Questions)
- Q1. Spark and airflow related questions
- Q2. AWS services and it's related questions
(1 Question)
- Q1. 2 Technical rounds questions on SQL and ML
4 SQL questions, complexity 7/10
(2 Questions)
- Q1. Previous projects
- Ans.
I worked on various projects involving data analysis, market research, and process optimization across different industries.
Conducted a market analysis project for a tech startup, identifying key trends and customer preferences.
Developed a predictive model for sales forecasting using historical data, improving accuracy by 20%.
Collaborated with cross-functional teams to streamline reporting processes, reducing time spen...
- Q2. In and around ML models
(2 Questions)
- Q1. Usual, simple behavioural
- Q2. Expected package
Mamta Priyadarshi
Aptitude test was easy, you can prepare it with online available resources
We were asked to complete few games which were related to logical thinking
It was a common topic and was 1 hour long
(1 Question)
- Q1. They asked basic sql question like joins, windows function, subqueries. Also they asked one guestimate and a case study. Guestimate- No. of IPhone stores in delhi Case study - How to increase the profit of...
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