IDEAL LEVEL OF MEASUREMENT 





Nominal 
Mode 
IQV 
C.I. of Prop** Onesample ttest of Prop** 
Symm. & Asym. lambda** Phi** 
ttest of proportions** Chi Square** 
Ordinal 
Median 
IQV 
Gamma, Gamma12.3 Tau, Tau12.3 
Gamma Test of Sig.(Var.#3 = NOM)** Tau Test of Sig.**  
Interval 
Mean 
Range, IQR Standard deviation 
C.I. of Means** Onesample ttest of Means** 
r**, r12.3** 
r Test of Sig.** 
int. by Nom. 
Eta 
ttest of means** Ftest** 
**The statistic has assumptions. For multiple choice "why or why not..." questions, ask:
LEVEL OF STATISTIC 
NOMINAL 
ORDINAL 
INTERVAL 
NOMINAL 
IDEAL 
OK, BUT 
WASTES 
ORDINAL 
LOGICAL 
IDEAL 
DATA 
INTERVAL 
ERRORS 
MADE 
IDEAL 
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