Class Notes (1,100,000)

US (470,000)

UCLA (10,000)

PSYCH (600)

PSYCH 100A (100)

Reise Steven (20)

Lecture 6

# PSYCH 100A Lecture Notes - Lecture 6: Standard Deviation, Central Tendency, Analysis Of Variance

by OC2507568

Department

PsychologyCourse Code

PSYCH 100AProfessor

Reise StevenLecture

6This

**preview**shows half of the first page. to view the full**2 pages of the document.**Thursday, January 23, 2020

Psych100A Week3

Lecture3-2!

-Descriptive Statistics!

•Central tendency of scores in a distribution !

-Mean!

•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!

-median!

-mode!

•Variability of scores in a distribution!

-Sum-of-Squares!

-Variance and standard deviation!

-range!

•Max – Min!

•Appropriate for ordinal, interval/ratio!

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