1.) Identify hypotheses tested in Yamane and Gilman 2009.
-The Hypothesis tested by Yamane and Gilman is that air temperature during emersion and water temperature during submersion affects the growth and feeding rates of Nucella Lamellosa.
2.) What are some hypotheses that you have about your own life? List three in your lab notebook.
- 1- If I get a graduate degree it will be easier for me to find a job I find rewarding.
-2- If I do some of my homework every day, rather than cramming at the last minute, I will get better grades.
-3- If I replace eating candy with eating fruits and vegetables my stomach will feel better when I wake up in the morning.
3.)Which of these variables measure growth rate?
- marginal growth (start and end), shell height (start and end),shell weight (start and end), tissue weight (start and end).
4.)Which of these variables do you think affects growth rate?
- (only snails removed from water, 2 hours),( only snails removed from water, 5 hours), (snails and barnacles removed from water, 2 hours), (snails and barnacles removed from water, 5 hours), (barnacles removed from water, 2 hours), (barnacles removed from water, 5 hours), (snails knocked off the barnacles once each day), (number of barnacles consumed over the course of the experiment), (control).
5.)Which of these variables do you think affects how much snails eat?
- (only snails removed from water, 2 hours),( only snails removed from water, 5 hours), (snails and barnacles removed from water, 2 hours), (snails and barnacles removed from water, 5 hours), (barnacles removed from water, 2 hours), (barnacles removed from water, 5 hours), (snails knocked off the barnacles once each day), (control).
6.)What variables are independent?
- (only snails removed from water, 2 hours),( only snails removed from water, 5 hours), (snails and barnacles removed from water, 2 hours), (snails and barnacles removed from water, 5 hours), (barnacles removed from water, 2 hours), (barnacles removed from water, 5 hours), (snails knocked off the barnacles once each day), (control).
7.)What variables are dependent?
- marginal growth (start and end), shell height (start and end),shell weight (start and end), tissue weight (start and end), number of barnacles consumed over the course of the experiment.
8.)What variables are categorical?
-I have admit I am still a little unsure on the fine line between these categorizations of variables, but if you are referring to purely categorical, not categorical numerical, then I would say only (the control group is purely categorical), because the dependant variables are numerical and the rest of the independent variables are categorical numerical because they are quantified either by the amount of hours they are occurring or amount of times they occur in a day, in this case the latter only being the one independent variable quantified as once per day. Is this correct?
9.) Which variable are you studying?
- Number of barnacles consumed over the course of the experiment
10.) Which experimental treatment are you studying?
- Snails knocked off the barnacles once each day
11.) Make a prediction about how these variables will interact. This is your hypothesis:
- The snails being knocked off the barnacles once each day will not affect the number of barnacles consumed over the course of the experiment.
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