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Unformatted text preview: much overlap there is between scores from different sets of data o Lots of overlap- the groups are probably not different o Little overlap- the groups are significantly different • Skewness o A measure of the lack of symmetry of a distribution o Positive Skew- there are a large proportion of lower occurrences o Negative Skew- there are a large proportion of positive occurrences • Skewness Normalized o Sk=3(mean[or xbar]-median)/s • Variability o The wider the graph the more variability (on a histogram) • Kurtosis o Mesokurtic- normal distribution, no kurtosis o Luptokurtic- Skinny- less dispersion of scores o Platykurtic- Fat- more dispersion of scores Closer to a uniformal distribution...
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This note was uploaded on 12/07/2011 for the course PSYC 203 taught by Professor Worthy during the Spring '11 term at Texas A&M.
- Spring '11