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Hackerrank - SQL and Statistics
How to make a regression model
False positive and false negative are terms used in data analysis to describe errors in classification models.
False positive refers to a situation where a test result incorrectly indicates the presence of a condition or attribute.
False negative refers to a situation where a test result incorrectly indicates the absence of a condition or attribute.
In medical field, false positive can occur when a healthy person is wrong...
I applied via LinkedIn and was interviewed in Feb 2024. There were 2 interview rounds.
I have 3 years of experience as a Data Analyst in a tech company.
Analyzed large datasets to identify trends and patterns
Created visualizations and reports to communicate findings to stakeholders
Utilized SQL, Python, and Tableau for data analysis
Developed predictive models for customer churn and sales forecasting using Python and SQL.
Utilized Python and SQL for data analysis
Developed predictive models for customer churn
Performed sales forecasting
Presented findings to stakeholders
SQL and Python, 5 sql queries and 5 python questions were asked
Duration - 1hr, Mostly questions are from Excel and SQL ( But a little knowledge of R and Python is very useful) .For me, it's knowing the concepts and answering no codes were ask to write.
I applied via Campus Placement
I applied via Campus Placement
My greatest achievement was leading a team to successfully launch a new product ahead of schedule and under budget.
Led a team to launch a new product ahead of schedule
Managed project under budget
Received recognition for successful project completion
My name is John Smith.
Full name is John Smith
Common first and last name combination
Easy to remember and pronounce
Guesstimate and behavioral question
There were some aptitude question, Pandas question, SQL queries.
Use SQL query with DISTINCT keyword to filter duplicate entries.
Use SELECT DISTINCT column_name FROM table_name;
DISTINCT keyword removes duplicate values from the result set.
For example, SELECT DISTINCT name FROM employees;
You can also use GROUP BY clause to eliminate duplicates.
I applied via LinkedIn and was interviewed before Apr 2023. There were 3 interview rounds.
Simple Case Study was discussed
SQL, General Aptitude Questions
10 minutes GD on general topics.
based on 1 interview
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