Data Analysis and Decision Making HW Assignment 1

In this project, we use multiple linear regression to model a car’s fuel efficiency (measured in miles per gallon, MPG) based on two key features: weight and horsepower. Using the built-in mtcars dataset in R, we explore how these variables relate to MPG, visualize the relationships with ggplot2 and plotly, and interpret the regression output. Our final model explains approximately 83% of the variation in MPG, showing that heavier and more powerful cars tend to have lower fuel efficiency.