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AP STATS terms 1

AP STATS terms (page one)

TermDefinition
Categorical Variable A categorical variable places an individual into one of several groups or categories.
Quantitative Variable A quantitative variable has numerical values and it makes sense to find the average value.
Association There is an association between two variables if knowing the value of one variable helps to predict the value of the other.
Mean Average value of the observations.
Median Midpoint of the values. Also called Q2.
First, Third Quartiles Q1 has about one-fourth (25%) of the observations below it, and Q3 has about three-fourths (75%) of the observations below it.
Interquartile Range IQR is the range of the middle 50% of the observations. IQR=Q3-Q1.
Created by: user-2025445
 

 



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