Lecture: Scientific & Quantitative Methods; Experimental Design
Updated: 27 January, 2009
Example-1: A local paper reported the results of a research study of the health of beer drinkers and non-drinkers.
This scientific study was similar in design to many studies on the physiology of humans and the link between nutrition and health.
Somewhat surprisingly, the study found that moderate beer drinkers (1-2 beers per day) were in fact healthier (measured fewer
days missed from work and fewer doctors visits over the course of the study) than t-totalers. Of all you budding premeds and
biochemists, why do you think that small amounts of beer makes you healthier?
Example-2: Water Lilies
Biomass (dry weight): < 0.1gm beetle :: 1,000gm leaf
Example-3: Aphid mortality
Average of multiple samples (N = 1,000 each): 750 live aphids :: 200 wasp mummies :: 50 fungal crispies