Lam Research Senior Analyst Interview Questions and Answers

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

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

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

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

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

I have over 5 years of experience as a Business Analyst in the finance industry.

• Led cross-functional teams to analyze market trends and develop strategic plans

• Performed data analysis to identify opportunities for cost reduction and revenue growth

• Collaborated with stakeholders to gather requirements and create detailed business requirements documents

Business Analyst responsibilities include analyzing data, identifying trends, and making recommendations to improve business processes.

• Gather and analyze data to identify trends and make recommendations

• Work closely with stakeholders to understand business needs and requirements

• Create reports and presentations to communicate findings and recommendations

• Collaborate with cross-functional teams to implement solutions

• Monito...read more

In 5 years, I see myself as a senior analyst at Qualcomm, utilizing my skills to drive innovation and contribute to the company's success.

• I am passionate about technology and Qualcomm's cutting-edge advancements in the semiconductor industry align with my career goals.

• I believe Qualcomm's global presence and diverse projects will provide me with ample opportunities for growth and development.

• I aim to become a subject m...read more