PSYC1001 Lecture Notes - Lecture 5: Raw Score, Voltage-Dependent Anion Channel, Null Hypothesis
9 Aug 2018
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Document Summary
Frequency distributions: each score is on the axis and how often the score occurred is the height of the line above that access. Tails are scores that are far away from the mean. Likelihood or probability: when the graphs become conceptual (when raw distributions become sample distributions), the height of the line above the axis tells you probability of obtaining sample mean of that value. When you are trying to establish than an effect is real, you can no longer rely just on means, you need more information about variability. Understand variability, learn how to discount it and find out its effects: human behaviour varies. Presence of noise is almost always evident in psychology experiments caused by: inconsistent behaviour, inexact measurement, constructs which may not be the best way to consider a problem. Challenge is to develop a method to find patterns in that noise, so that we do not build theories on random occurrences.
