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AP stats


Outlier Rule Upper Bound = Q3 + 1.5(IQR) Lower Bound = Q1 – 1.5(IQR) IQR = Q3 – Q1
What is an Outlier? When given 1 variable data: An outlier is any value that falls more than 1.5IQR above Q3 or below Q1 Regression Outlier: Any data point that has a “large” residual
Interpret a Z-score A z-score describes how many standard deviations a value or statistic falls away from the population mean. The further the z-score is away from zero the more “surprising” the value of the statistic is.
LSRL “b” (slope) For every one unit change in the x-axis variable (context) the y-axis variable (context) is estimated to increase/decrease by ____ units (context).
Created by: Wilsonmar