This document demonstrates how to read and compare data from HTML, XML, and JSON files in R. The dataset contains information about three fiction books.

Introduction to simple and multiple linear regression using R plots (ggplot and plotly)

Submission for correlation homework 03/16.

Example of basic linear regression methods being applied to data on Swiss fertility in 1888.

Here I share the updated database of excess returns to equity and the firm for 491 publicly traded Singaporean companies across sectors. Starting with how the market is pricing risk (both country and equity risk premiums), and then moving on to the cost of equity at each debt ratio, and then estimated the interest coverage ratio, synthetic rating, and cost of debt, taking care to ensure that if the interest expenses exceed the operating income, tax benefits would be lost. These hurdle rates also represent benchmarks that businesses have to beat to create value. When we invest capital in risky businesses, we need to not just make money, but make enough to cover what we could have earned on investments of equivalent risk.