My project is the effect of oysters on the water quality of the Chesapeake Bay. In order to test for this i got 4 tanks full of bay water and put about 2 inches of sand in the bottom of each (each tank had equal amounts of sand and water all retrieved from the same place). in the first tank i put 0 oysters, in the second 7 oysters, in the third 14 oysters and in the fourth 21 oysters. I tested for pH, nitrite, ammonia and nitrate for 2 weeks straight testing every other day and then i would start a new trial. I have done 3 trials and i am wondering the best way to graph my results and how to display my raw data. what is raw data? my teacher keeps telling me I need it but i'm not entirely sure I know what she means. So please if you have any suggestions respond to me!
Thanks a bunch!
kelly
My Project: urgent! need help from expert
Moderator: berkeleywebs
thats what she said but i was slightly unsure what I should be graphing. Should I graph all my data from day 1 to day 14 or should I graph an average of all 3 Trials combined? or maybe graph the last day and compare my results at day 14? which one would be best for getting in to the science fair?
thank!
kelly
thank!
kelly
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