Spring 2000 Class Notes
(Please note: These notes are collapsible!)
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January 29, 2000 

	IVs, DVs, & Extraneous Variable Examples Your Grade in this course DV = Your numeric grade (ratio scale) IV = Number of hours studied (ratio scale) Extraneous variable = Weather, time of day, difficulty of class
	Distributions Normal Distribution Bell curve Mean, Median, and Mode are all in the middle of a normal distribution The shape is symmetrical The distribution is theoretical e.g., distribution of heights Positive distribution The mean is greater than the median The tail of the distribution "points" to the right e.g., salary Negative distribution The mean is less than the median The tail of the distribution "points" to the left
	J-Curve
	Positively or Negatively skewed
	An overwhelming majority of scores are clustered at one end with a few outlying scores to the extreme other end