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Statistics Symbols
Common symbols used in an introductory statistics course
10
Mathematics
Advanced
09/27/2019
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Term
x
 Definition
data value
Term
n
 Definition
number of values in a sample
Term
N
 Definition
number of values in a finite population
Term
s
 Definition
standard deviation of a set of sample values
Term
σ
 Definition
standard deviation of all values in a population
Term
s2
 Definition
variance of a set of sample values
Term
σ2
 Definition
variance of all values in a population
Term

_

x

 Definition
mean of all values in a sample
Term
μ
 Definition
mean of all values in a population
Term
z
 Definition
standard score
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