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Hypothesis Testing For Intro Statistics, σ: Population Standard Deviation,…
Hypothesis Testing For Intro Statistics
Categorical Data
Two Variables
Chi Squared for Independence (Two-way test)
One variable and expected values for each category
Chi-Squared for Goodness of Fit (One-way)
Numerical Data
More Than Two Samples
ANOVA
Correlational (X,Y) pairs of scores
Use the r to calculate a t-statistic
One Sample
Is σ given?
Yes
Z-Test
No
T-Test
Two Samples
Is σ given?
No
How are the sample groups related?
Participants are the same person measured twice
Repeated Measures T-Test
Participants are Different but have some kind of logical connection
Paired/Matched T-Test
No relation
Independent Measures T-Test
Yes
Two-Sample Z-Test
σ: Population Standard Deviation
