SOCY 210 Lecture Notes - Lecture 8: Skewness, Statistical Significance, Standard Deviation
25 Nov 2014
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On average, how much do cases vary from that score, it can be heavily influenced by extremes. Z score z score = mean/ standard deviation. Shifted o the left: mode, median, mean - not satisfied with their scores - positively skewed disposition shifted to the right: mean, median, mode - higher satisfaction scores. Make inferences about a sample and extrapolate to a larger sample, correlation. Parameter (descriptors of population) vs. statistic (what we used to talk about a sample) Statistical significance and inferential statistics steps: set up null hypothesis, establish an acceptable level of statistics significance, determine the statistical significance of the findings. Type 1: true null hypothesis rejected - there is an affect , no relationship (sentence innocent to prison) Type 2: accept null hypothesis when it should be rejected (let guilty go free. Look at how two variables move together or correlate.
