QuizMe

* question was added at: 04-11-2020

How do Eerkens and Bettinger (2001) describe the Weber fraction? Select one:

		Our ability to compare objects is limited by our sensory systems only.
		(The sample standard deviation divided by the sample mean) × 100%.
		Objects have to differ more than 2-3% in weight or length in order to be perceived as different.