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Statistics Symbols

QuestionAnswer
The hypothesis stating what the researcher is seeking evidence of. (claim) The statement can have an inequality, greater than or less than. Symbol: H_a Alternative Hypothesis
n Sample Size
μ- mu Population Mean
σ -sigma Population Standard Deviation
p Population Proportion
ρ- rho Population Correlation Coefficient
μ_1-μ_2 Difference in Population Means
H_0- H sub-zero Null Hypothesis
α- alpha Significance Level
x ̅- x bar Sample Mean
s Sample Standard Deviation
p ̂ - p hat Sample Proportion - can be a percentage or a decimal
r Sample Correlation Coefficient
x ̅_1-x ̅_2 Difference in Sample Means
0.01, 0.05, & 0.10 Most common Significance Levels
α=0.05 If no significance level is indicated, use this significance level.
Created by: user-2004273
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