AP Biology Necessary Graphing and Quantitative Skills 

Ecology Formula

Watch this video to understand better: ________: to interpret and represent population dynamics in ecosystems.

K

________= carrying capacity rmax= maximum per capita growth rate of population.

DY

________= amount of change B= birth rate D= death rate N= population size.

DN

________= ∆N= Change in population size= population growth rate.

P value

________: 0.05 for AP Bio goes into the idea of 95 % confidence interval.

Alternative hypothesis

________: a hypothesis that determines a negative result or a positive result (A will have an affect on B if…)

Positive control group

What: is known to have an affect? Answer with a single words or term.

Null hypothesis

________: there will be no effect on the dependent variable (A will have no effect on B)

Degrees of freedom

________: # of choices- 1.

Control group

________: this is used to compare the different groups of the experiment and whether there was a significant difference.

Error bars

________ represent the standard error of the mean.

Critical Value

________: degree of freedom at the P- value.

Water potential

________ can be affected by the concentration of solute and the pressure.

Negative control group

________: something that is known to have no effect.

Dependent Variable

________: The variable that is being measured of tested.

Water potential values

________ are negative so the greater the negative value the more likely water will move.

Independent Variable

Variables apart of the Experimental Design: ________: The Variable that is being manipulated.

highest water potential

The ________ is 0.

Water potential

Water Potential /Osmosis Problems: What is a calculation that determines the likelihood of water leaving a certain location? Answer with a single words or term.