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Exam 1

Experimental Design and Statistics

Three elements of experimental design appropriate controls, replication, and randomization of replicates
Appropriate control the only factor that is changed is the factor of interest, side by side is ideal, at least 2 variances of the factor, and the same approach must be taken for each factor (ie altering bird eggs)
Replication limited by time and money, must be within the same experiment, at least 3 is ideal, replicates must be completely independent of one another so not to accidentally cause pseudoreplication
Pseudoreplication mistake of claiming things are replicates when they are not independent of one another
Randomization randomizing treatments, positioning, and timing of measurements
Null Hypothesis what is seen due to random chance, must have enough evidence to reject
P-value probability that the null hypothesis is true, the null hypothesis can be rejected if the value is less than or equal to .05
Linear regression only used when a cause and effect relationship is suspected, line of best fit can be added
Correlation used when there is an interest in whether there is a linear relationship between two variables, does not purpose cause and effect, never use line of best fit
Created by: 924654707556942