ScaleupAlly Data Analyst Interview Questions and Answers

Forecasting problem - Predict daily sku level sales

Q1. What is difference between bias and variance
Ans. 
Bias is error due to overly simplistic assumptions, variance is error due to overly complex models.
• Bias is the error introduced by approximating a real-world problem, leading to underfitting.

• Variance is the error introduced by modeling the noise in the training data, leading to overfitting.

• High bias can cause a model to miss relevant relationships between features and target variable.

• High variance can cause a model to ...read more
Answered by AI
Add your answer
Q2. Parametric vs non parametruc model
Ans. 
Parametric models make strong assumptions about the form of the underlying data distribution, while non-parametric models do not.
• Parametric models have a fixed number of parameters, while non-parametric models have a flexible number of parameters.

• Parametric models are simpler and easier to interpret, while non-parametric models are more flexible and can capture complex patterns in data.

• Examples of parametric models inc...read more
Answered by AI
Add your answer

Easy and moderate level question

Given a relevant topic and discussion on it

Q1. Introducd yourself
Add your answer
Q2. Why do you want to join us
Add your answer

Q1. Mostly about projects ml, nlp, python code would be asked
Add your answer

Q1. It would be focused on technical stuff in detail ml, nlp, deployments etc
Add your answer

Q1. Organisation fit
Add your answer

Q1. What is the full form of ETL?
Ans. 
ETL stands for Extract, Transform, Load. It is a process used in data warehousing to extract data from various sources, transform it into a consistent format, and load it into a target database.
• ETL stands for Extract, Transform, Load

• Extract: Involves extracting data from various sources such as databases, applications, and files

• Transform: Involves cleaning, filtering, and transforming the extracted data into a consiste...read more
Answered by AI
Add your answer
Q2. ETL Full form is Exact, Transform, Load.
Add your answer