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Ch 7 Stats Symbols

Important symbols to know in studying elementary statistics - Chapter 7

QuestionAnswer
N Number of data values in a population
n Number of data values in a sample
df Degrees of freedom = n-1
μ Mean of all values in a population
x̄ Mean of all values in a sample
p Population proportion
p̂ Sample proportion
σ Population standard deviation
s Sample standard deviation
σ^2 Population variance
s^2 Sample variance
E Margin of error
α Level of significance
χ2_L Chi-square critical value (left-tailed)
χ2_R Chi-square critical value (right-tailed)
z_(α⁄2) Standard normal critical value
t_(α⁄2) Student t critical value
Created by: gboxdorfer
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