によって nur aziera 10年前.
2363
statistical test
STATISTICAL TESTS
WILCOXON SIGNED RANK TEST
2 dependent samples
KRUSKAL-WALLIS
Unpaired/independent samples
CHI SQUARE TEST
Characteristics
nominal data
displayed in contingency table
categorical variable
random sampling method
Only one sample
CORRELATION
Spearman's rank
not normally distributed
ordinal or interval variable
Pearson's product-moment
approximately normally distributed
interval variable
Relationship between variables
strength of relationship
positive or negative relationship
REGRESSION
Prediction
Equation
R2 - coefficient of determination
Y = a + bX
Models
one independent
one dependent
MANN-WHITNEY TEST
Non-parametric test
Not normally distributed
2 independent samples
TWO-WAY ANOVA
Same sample size
Samples normally distributed
ONE-WAY ANOVA
From normal distribution
Unpaired/independent sample
3 or more samples
DEPENDENT T-TEST
Same subjects
eg 2: marital status
single
after
before
INDEPENDENT T-TEST
Parametric test
Different subjects
eg 2: teeth location
maxillary
mandibular
eg 1: gender
female
male
Two conditions
