In an experiment, a subject is throwing a dart at a target. They rst throw 10 times with normal vision, and then 30 times after putting on prism googles that distort their vision to the right. After they take the goggles o, they throw 10 more times with normal vision. Which of the following measures would provide the best evidence of any learning that may occur during the experiment?

a The mean error of the 30 trials performed with the goggles on b. The Standard Deviation of the error during the 30 trials performed with the goggles on c. The mean error of the 10 trials after the goggles were removed d. The mean absolute error of last 10 trials performed with the goggles on e. The Standard Deviation of the error during the 10 trials after the goggles were removed

what's the answer