BSC 2010L Study Guide - Quiz Guide: Null Hypothesis, Type I And Type Ii Errors, Analysis Of Variance
18 Oct 2016
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Independent variable: the variable you are manipulating in the experiment to see if there is change. Dependent variable: variable that shows the results from the manipulated independent variable. Discrete: set number/concrete # of dimes, true/false, which party won the election. Continuous: can take on value in between two numbers temperature, wavelength, amount of water consumed. Categorical: puts info into categories but no numerical order hair color, gender but there is no 1st,2nd,3rd. Ordinal: there is a clear ordering of the categories low, medium, high, 1st, Null hypothesis: no relationship between the dependent and the independent variables; there is no association between the two phenomena: to disprove the null hypothesis means that you are proving there is some sort of relationship. A t-test assesses whether the means of two groups are statistically different fro(cid:373) ea(cid:272)h other, if there is a (cid:862)real(cid:863) differe(cid:374)(cid:272)e (cid:271)et(cid:449)ee(cid:374) the t(cid:449)o sets of data (statistically significant)
