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Ch 7 Stats Symbols
Important symbols to know in studying elementary statistics - Chapter 7
Question | Answer |
---|---|
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 |