See the results graphed on an experiment I just completed to decide whether to commute straight in to Minneapolis on Minnesota Highway 36 or take US Interstate 694 –a speedier, but longer, freeway bypass. Notice that the least significant difference bars do not overlap, thus providing more than 95 percent confidence that the scales tilt to one way (36) being faster–to put it simply.
For each run into work I randomly chose one route or the other based on a recipe sheet produced by Design-Expert software and timed it with a stopwatch app on my smart phone. Then I entered the results in the software and it gave me the answer I wanted.
It appears that I can save the better part of a minute by not shooting around on 694. That is good to know!
#1 by Eric Kvaalen on May 27, 2013 - 12:51 pm
I’d like to know which way used less fuel.
#2 by mark on May 27, 2013 - 1:22 pm
The jury remains out on fuel. Going directly on Minnesota Highway 36 covers 7.6 miles but risks 3 stop lights; whereas the bypass around Interstate 694 is freeway–perhaps worth the extra mile or so to avoid stopping.