PSYCH 100A Lecture Notes - Lecture 6: Standard Deviation, Central Tendency, Analysis Of Variance
Course CodePSYCH 100A
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Thursday, January 23, 2020
•Central tendency of scores in a distribution !
•The balancing point!
•a “good” estimator of its corresponding population value!
•Takes into account every score!
-BUT, highly inﬂuenced by outliers if small n!
•a least squares estimator!
-The sum of the squared diﬀerence between scores in a distribution and the
mean is as small as possible!
•Variability of scores in a distribution!
-Variance and standard deviation!
•Max – Min!
•Appropriate for ordinal, interval/ratio!
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