Required Practicals Flashcards
Reaction time
1) The person being tested should sit with their arm resting on the edge of a table
2) hold a ruler vertically between their thumb and forefinger. Make sure that the zero end of the ruler is level with their thumb and finger. Let go without giving any warning.
3) the person being tested should try to catch the ruler as quickly as they can
4) reaction time is measured by the number int he ruler where its caught. The higher the number the slower the time
5) repeat several times to calculate a mean distance
6) the person should drink a caffeinated drink and repeat the experiment after around 10 minutes
Control - same person , same hand , same height the ruler should be dropped from , no caffeine before experiment
Sampling
1) Pick 2 sample areas
2) randomly generate a set number of places you are going to sample in each area. The number should be the same for both areas
3) place a 1m*2 quadrat on the ground at the first random point and count all organisms within quadrat
4) repeat steps until you have sampled all your randomly generated points
5) calculate a mean number of organisms per quadrat for the first sample area
6) repeat for second area
7) compare the two means
