BRM (Fach) / T-Tests (Lektion)
In dieser Lektion befinden sich 2 Karteikarten
T-Tests
Diese Lektion wurde von Juma erstellt.
- t-Test Calculate t-statistic as ratio of the difference between sample means to their standard error Specify alpha/significance level (e.g., 1% or 5%) Determine critical value tcrit from t-distribution (depends on total sample size: e.g., for n > 50 and α = 5% tcrit= 1.96) If absolute value of t-statistic exceeds tcrit reject H0 and assume μ1 ≠ μ2.
- Test statistic t= (mean x1 - mean x2)/Standard error x1x2