Ignitho Technologies Data Analyst Interview Questions and Answers

Aptitude test, basic maths and LR

SQL and Visualisation related

Q1. Asked for details after qualifying in test
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Q1. What are different agile methodologies
Ans. 
Agile methodologies are iterative and flexible approaches to project management.
• Scrum: Focuses on delivering small increments of work in short iterations called sprints.

• Kanban: Visualizes work on a board and limits work in progress to improve flow.

• Extreme Programming (XP): Emphasizes continuous feedback, frequent releases, and close collaboration.

• Lean: Aims to eliminate waste and maximize customer value through continu...read more
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Q2. Difference between BRD and FRD
Ans. 
BRD and FRD are both documents used in the software development process, but they serve different purposes.
• BRD stands for Business Requirements Document and focuses on the business needs and objectives of a project.

• FRD stands for Functional Requirements Document and outlines the specific functionalities and features of a software system.

• BRD is more high-level and describes the 'what' and 'why' of a project, while FRD i...read more
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Q1. Normal question about past experience
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Q2. When you can join and all
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SQL test on Select query, insert, create

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
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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
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Q1. Linked list question to detect cycle
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Q2. Basic questions from JS
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Q1. Some questions related to my projects
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Q2. Some Questions related to my past experience
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Q1. Map reduce filter in javascript
Ans. 
Map, reduce, and filter are higher-order functions in JavaScript used to manipulate arrays.
• Map: Transforms each element in an array and returns a new array with the transformed elements.

• Reduce: Reduces an array to a single value by applying a function to each element.

• Filter: Creates a new array with elements that pass a certain condition.
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Q2. Exception handling
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Q1. Basic ios Questions No DS questions
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Q2. Basic swift quesions
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Q3. In App Purchase
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Q4. Hardware Device connectivity
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