Micron Technology Business Analyst Interview Questions and Answers

Q1. What is confusion matrix
Ans. 
A confusion matrix is a table that is often used to describe the performance of a classification model.
• It is a matrix with rows representing the actual class and columns representing the predicted class.

• It helps in evaluating the performance of a classification model by showing the number of correct and incorrect predictions.

• It consists of four quadrants: True Positive, False Positive, True Negative, and False Negative...read more
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Q2. Define your project
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Q3. Define principle component analysis
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Principal component analysis is a statistical technique used to reduce the dimensionality of data while preserving important information.
• PCA is used to identify patterns in data and express it in a more easily understandable form.

• It works by finding the directions (principal components) along which the variance of the data is maximized.

• These principal components are orthogonal to each other, meaning they are uncorrelat...read more
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Q4. Define inventory policy and inventory control method
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Inventory policy is a set of guidelines for managing inventory levels, while inventory control method is the process of implementing those guidelines.
• Inventory policy determines when to order new inventory and how much to order

• Inventory control method involves tracking inventory levels, forecasting demand, and optimizing order quantities

• Examples of inventory policies include Just-in-Time (JIT) and Economic Order Quanti...read more
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Q5. What is reverse logistics
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Reverse logistics is the process of moving goods from their final destination back to the manufacturer or point of origin for resale, recycling, or disposal.
• Involves returning products from customers to the manufacturer or retailer

• Includes activities such as returns, refurbishment, recycling, or disposal

• Helps in reducing waste and maximizing value from returned products

• Examples: returning a defective product to the man...read more
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The Aptitude test was tough!

Q1. 1. Introduction 2. What is Agile Methodology and it's working. 3. SDLC 4. Situation based question: if you a BA/Consultant and you have promised both the stakeholders and customer to deliver the work wi...read more
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Q1. Sql query to fetch 3rd highest salary in an organisation.
Ans. 
To fetch the 3rd highest salary, SQL queries can utilize ranking functions or subqueries for effective retrieval.
• Using Subquery: A common method is to use a subquery to select distinct salaries and then limit the results. Example: SELECT DISTINCT salary FROM employees ORDER BY salary DESC LIMIT 1 OFFSET 2;

• Using DENSE_RANK: SQL's DENSE_RANK function can rank salaries and allow for easy retrieval of the 3rd highest. Exam...read more
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Q2. Data warehousing
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