PHYS 1003 Study Guide - Standard Deviation
Document Summary
To calculate one"s visual and audible reaction time. All that is needed is a timer with two trigger switches. One switch will start the timer and the other will end the timer. Before recording the results a few sample times should be taken so that the test subject is comfortable with the equipment. This is to ensure that outliers are not caused due to inexperience with the equipment. Also the partners should switch every ten trials so that fatigue does not come into effect and hamper the results. The standard deviation from the mean is 7. 07 for both the tests. Calculations to find how many of the readings lie inside 1 sd of the mean for each distribution p=40/50=80% plo=33/50=66% For the visual stimulus, 80% of the population falls within 1 s. d. of the mean. By removing one bar from the right and two bars from the left then 66% of the population is found. p=34/50=68%
