IBM Interview Questions and Answers

Developed a new quality control process that reduced defects by 50%

• Identified root causes of defects through data analysis

• Collaborated with production team to implement new process

• Trained employees on new process and provided ongoing support

• Monitored results and made adjustments as needed

K-means is a clustering algorithm used to partition data into K clusters based on similarity.

• K-means is an unsupervised machine learning algorithm.

• It aims to group similar data points together and discover underlying patterns.

• The algorithm iteratively assigns data points to K clusters based on the mean of the data points in each cluster.

• It is commonly used in customer segmentation, image compression, and anomaly detection.

• Example: Segmenting customers based on their purchasin...read more

Heat treatment is a process used to alter the physical and sometimes chemical properties of a material through heating and cooling.

• Heat treatment involves heating a material to a specific temperature, holding it at that temperature for a certain amount of time, and then cooling it at a controlled rate.

• Heat annealing is a specific type of heat treatment process that involves heating a material to a specific temperature and then slowly cooling it to relieve internal stresses an...read more

Product costing procedure involves determining the total cost of producing a product.

• Identify all the direct and indirect costs associated with producing the product.

• Allocate the costs to the product based on a predetermined cost driver.

• Calculate the total cost of producing the product by summing up all the allocated costs.

• Example: A company manufacturing bicycles would identify direct costs such as materials and labor, and indirect costs such as rent and utilities.

• The cost d...read more

Joins in SQL are used to combine rows from two or more tables based on a related column between them.

• Joins are used to retrieve data from multiple tables based on a related column between them

• Common types of joins include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN

• INNER JOIN returns rows when there is at least one match in both tables

• LEFT JOIN returns all rows from the left table and the matched rows from the right table

• RIGHT JOIN returns all rows from the right table an...read more