SOAN 3120 Lecture Notes - Squared Deviations From The Mean, Normal Distribution, Standard Deviation
1 Oct 2013
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The median if n is an odd number, it"s integer the easy way! If n is an even number: fraction (average: how to calculate: Median symmetric distribution (normal: highest point is right in the middle skewed distributions: the mean and the median are pulled in the direction of the skew, example: positive. Mean will be larger than the median if it"s a positive skew: skewed right the hill part is on the left, and the tail is on the right. Median greater then the mean: skewed left the hill part is on the right, and the tail is on the left. M (q2): (1/2: second quartile is represented by the median (so q2, it"s the halfway point. Q3: third quartile (3/4: the point that has 75% or three quarters of the observations below it. Quartiles finding q1 and q3: order from smallest to largest find median the halfway point find position. September 12, 2013 lecture 3 - soan.
