PSY 340 Study Guide - Final Guide: Variance, Standard Deviation, Central Tendency
Document Summary
Psy 340 fall 2017 final exam study guide. K(cid:374)o(cid:449) the sy(cid:373)bols; i"ll gi(cid:448)e you the for(cid:373)ulas. For all the a(cid:374)alyses (cid:373)ake sure you know how to read spss output/tables. Mean (computing the mean from a distribution of scores: the weighted mean, characteristics of the mean. Mode (finding the mode from a distribution of scores) Median (finding the median from a distribution of scores) Computing deviation scores, sum of deviation scores. Computing population and sample variance and sd. Relationship between variance and standard deviation z-scores. Standardizing an entire distribution (impact on shape, mean, sd) Comparing scores across different distributions (using z-scores to make comparisons) The alpha level, or the level of significance. Critical region, the boundaries for the critical region. Hypothesis testing steps (state your hypotheses, set the criteria for a decision, compute the test statistic, make a decision about h0). Using z-scores inferentially (when can they be used, critical values, using the formula)
