B Buffs

B Buffs

The Lowdown on Stockholders’ Equity

The Lowdown on Stockholders' Equity

Stockholders’ equity represents the portion of a company’s assets that remains after we subtract all liabilities. Think of it as the owners’ residual claim on the company. This equity section primarily consists of two key parts: Contributed Capital and Earned…

A Linear Algebra Approach to Least Squares

A 3D mathematical visualization showing a vector 'y' outside a planar subspace 'W'. A dashed line representing the error vector drops orthogonally from 'y' onto the plane to the closest point 'Ax', illustrating the geometric solution to the least squares problem.

In science and engineering, we rarely get perfect data. When we collect measurements \((t_i, y_i)\), they almost never fall perfectly on a straight line due to noise or experimental error. We are usually looking for the “best fit” line \(y…

Economies of scale

Economies of scale in automobile manufacturing

Economies of scale refer to the cost advantages that businesses gain as they increase their production levels. Why do these advantages occur? To understand this, let’s review some key variables and introduce new ones along with appropriate notation. The variables…

External Analysis: Porter’s Five Forces (1/5)

Competitive Rivalry

Analyzing a business situation typically involves examining both the external environment and a company’s internal capabilities. In this session, we’ll begin by exploring frameworks specifically designed to assess the external environment. Why the External Environment Matters Understanding external factors—especially the…

External Analysis Porter’s Five Forces (4-5/5)

Diversifying and building cooperative relationships are effective ways to reduce the bargaining power of suppliers and customers.

4th Force: Bargaining Power of Suppliers Suppliers are entities that provide the necessary inputs—such as raw materials, components, or services—that enable a company to operate. The following examples show supplier relationships across different industries: Industry Suppliers Airlines Aircraft manufacturers Medical…

External Analysis: Other Frame Works

A graph illustrating the industry life cycle model, showing the change in sales over time across five stages: Introduction, Growth, Shake Out, Maturity, and Decline.

Other frame works One of the most important reasons for analyzing the external environment is to anticipate future trends and identify potential challenges or opportunities. Of course, it’s not feasible to examine every aspect of the external environment. However, frameworks…