PSYC 1001 Lecture Notes - Lecture 5: Research, Likert Scale, Observer-Expectancy Effect
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The standard deviation is a way to determine how far away from the mean each data point is. If the mean of iq"s is 100, and each standard deviation is 15, and you are 132, you are 2 standard deviations from the median. That means that only 2. 1% are smarter, because their iq is higher. Inferential statistics deal with any kinds of data when you are trying to gure out something with the population. Groups that are too small have a greater chance of messing up. The population would not usually bet his well de ned. P = a number: p is for probability, called the p value. We can just estimate the probability to make a mistake. People feel goo to publish when something is done with 20 people or less. Always be careful about how the information is told, because stats can lie. !1: think about why the information being given to you, and what it means.
