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Hanning Motors Interview Questions and Answers
Q1. What is ETL and do you know where it us used
ETL stands for Extract, Transform, Load. It is a process used to extract data from various sources, transform it into a usable format, and load it into a data warehouse.
Extract: Data is extracted from different sources such as databases, files, APIs, etc.
Transform: Data is cleaned, formatted, and transformed into a consistent structure.
Load: The transformed data is loaded into a data warehouse for analysis and reporting.
ETL is commonly used in data warehousing, business intel...read more
Q2. How to handle date different date formats
Handle date different date formats by standardizing them using a common format
Identify all the different date formats present in the dataset
Convert all dates to a common format (e.g. YYYY-MM-DD)
Use libraries like pandas in Python to parse and standardize dates
Handle missing or incorrect dates by setting them to a default value
Q3. What are indexes
Indexes are data structures that improve the speed of data retrieval operations in databases.
Indexes are used to quickly locate data without having to search every row in a database table.
They are created on columns in a database table to speed up SELECT queries.
Examples of indexes include primary keys, unique keys, and non-unique indexes.
Q4. Do you know regex
Yes, I am familiar with regex and have experience using it for data analysis.
Regex stands for regular expressions and is used for pattern matching in text data
It allows for searching, extracting, and manipulating text based on specific patterns
Example: using regex to extract email addresses from a dataset
Q5. Root Cause Analysis for Sales down
Sales down root cause analysis involves identifying factors impacting sales performance.
Review sales data to identify trends and patterns
Analyze market conditions and competitive landscape
Evaluate sales strategies and tactics
Assess product pricing and positioning
Consider external factors such as economic conditions or industry changes
Q6. Product Design of uber for kids
Uber for kids is a safe and convenient transportation service designed specifically for children.
Ensure background checks for drivers and implement strict safety protocols.
Provide options for parents to track their child's ride in real-time.
Offer child-friendly vehicles equipped with car seats and entertainment options.
Allow parents to schedule rides in advance and set pick-up and drop-off locations.
Implement a rating system for drivers to maintain service quality.
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