This analysis explores whether manual or automatic transmission leads to better fuel efficiency (measured in miles per gallon, MPG) using the `mtcars` dataset. Exploratory analysis and multiple regression models were fitted to assess the effect of transmission type on MPG while controlling for confounding factors. The results show that **manual transmission cars have significantly higher MPG** than automatic cars, with an average difference of approximately **7.2 MPG** (95% CI: 3.0 to 11.4), after accounting for car weight and horsepower.

An analysis of the U.S. National Oceanic and Atmospheric Administration's (NOAA) storm database.