PSYC 100 Lecture 4: PSYC 100 9/15/16
16 Sep 2016
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Psyc 100 - lecture 4 - research methods in psychology. With generalizations, inferences can be made of populations. Each person in population has equal chance of being asked to participate in research. Should include as many people as possible. Greater population - more likely to achieve accurate results. If positive, it can be inferred that 2 subjects are correlated with each other, but one does not cause other. One value goes up, other goes up, one value goes down, other goes down. Negative/inverse correlation - one value goes up, other goes down. Best fitting line - where every score falls on perfect line. If positive, correlation does not need + sign. Need to know from calculated value whether or not strong correlation. Closer to -1 or +1 = stronger correlation. Sign = - or + (or no notation) Magnitude is greater the closer to -1 or +1. R = 0. 7 leads to r^2 = 0. 49, means 51% error.
