EcoModder Forum Difference in displayed vs measured MPG: Statistical Analysis

Register Now
 Remember

 10-12-2020, 11:54 AM #1 (permalink) Moderator     Join Date: Feb 2012 Location: Champaign, IL Posts: 1,919 Pope Pious the Prius - '13 Toyota Prius Two Team ToyotaSUV 90 day: 51.62 mpg (US) Tycho the Truck - '91 Toyota Pickup DLX 4WD 90 day: 22.22 mpg (US) Thanks: 198 Thanked 1,777 Times in 925 Posts Difference in displayed vs measured MPG: Statistical Analysis In the garage, I have recorded the MPG displayed on the factory gauge for almost every fillup. Leaving out the two I missed, there are 178 fills with these data. Since I'm taking a statistics course this semester, I thought it would be fun to run a simple analysis. Here's what I found: Using the quartile method to identify outliers, I removed two data: the two times when the factory display underestimated calculated MPG. The remaining 176 fills chart nicely into a normal curve. Median = 3.0 MPG difference Mean = 3.04 MPG difference Percent difference shows an even clearer normal curve, and again median and mean are very close to each other. Median = 5.58% difference Mean = 5.563% difference __________________
 The Following User Says Thank You to Vman455 For This Useful Post: M_a_t_t (10-16-2020)
 Today Popular topics Other popular topics in this forum... View the most popular topics in this subforum by views or by posts