GPS vs. OBD speed (fun with math) - Toyota Yaris Forums

cwitte · 11-04-2011, 03:57 PM

Random nerdy facts. I took a hour of data (one data point per 5 seconds) while on the interstate 80 yesterday coming back to the great of Nebraska (hey its my home) from Joliet and I found out the following: the GPS registered a 0.5604 mph difference (GPS faster than OBD) The confidence interval was (0.4873, 0.6335) at 95%. I used a paired T test to compare the data. The P value was 0, indicating a definate difference.

Other facts 2010 LB MT no new rims/tires yet. New wheels are next spring.

In the unlikely event anyone is curious I can post my minitab file or export the date out into xls.

CrankyOldMan · 11-04-2011, 07:00 PM

My initial reaction is to point my finger and scream "NERDS!!!!" but then I realized that I use statistics and calculus in my daily life for non school-related problems. =)

11-04-2011, 03:57 PM	#1
cwitte Newbie DIYer Drives: 2010 Yaris LB MT Join Date: Dec 2010 Location: Waverly NE Posts: 33	GPS vs. OBD speed (fun with math) Random nerdy facts. I took a hour of data (one data point per 5 seconds) while on the interstate 80 yesterday coming back to the great of Nebraska (hey its my home) from Joliet and I found out the following: the GPS registered a 0.5604 mph difference (GPS faster than OBD) The confidence interval was (0.4873, 0.6335) at 95%. I used a paired T test to compare the data. The P value was 0, indicating a definate difference. Other facts 2010 LB MT no new rims/tires yet. New wheels are next spring. In the unlikely event anyone is curious I can post my minitab file or export the date out into xls.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
ABS and "!" lights are ON again!	onizuka	Canada	457	04-28-2023 10:40 AM
LTA Land Speed Races Harvest Edition 2011	fnkngrv	Off-topic / Other Cars / Everything else Discussions	10	01-12-2012 11:06 PM
NEED ENGINE CHECK LIGHT CODE LIST	Attitude	Forced Induction Forum	12	04-11-2011 07:38 PM
ive had it with math...	mastaofdisasta	Off-topic / Other Cars / Everything else Discussions	19	05-12-2009 02:48 PM

11-04-2011, 07:00 PM	#2
CrankyOldMan 2ZR swap. DO IT! Ask how! View User's Garage Drives: 09 Meteoric Metallic HB Join Date: Feb 2011 Location: West Michigan Posts: 2,333	My initial reaction is to point my finger and scream "NERDS!!!!" but then I realized that I use statistics and calculus in my daily life for non school-related problems. =)