Statistical Analysis for Education and Psychology Researchers

ordinal, 19

response, 11

statistical, 17

(See Random variable)

Variance, 69, 76

sum law, 141

Wilcoxon Signed Ranks test (for related measures), 125, 230

using SAS procedure PROC UNIVARIATE, 234

worked example, 232–239

Wilcoxon Mann-Whitney test, 125

using SAS procedure PROC NPAR1Way, 228

and standard error of test statistic, 227

relationship with Mann-Whitney U statistic, 222

worked example, 225–228

Yate’s correction for continuity, 167–168

Z score, 107

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STATISTICAI. INFERENCE ABOUT

DESIGN: COUNT DATA CONTINUOUS

DATA

One. Sample Binomial/Nominal Rank Normal
Research Q:
Association/
relationship

One sample χ^2 test of

Independence (6.1) Phi

Coefficient and Cramer’s

Phi (6.1)

Spearman’s rank order

rs correlation (7.2)

Pearson correlation r

(8.3)

Difference Binomial test difference
between 2 proportions (or
%) (6.2)

One sample Runs test

(7.3)

—

Research Q:
Prediction
(independent
variable is
continuous)

— — Linear

(Response

continuous

Regression

variable is

(8.2))

Two. Sample Independent Related Independent
Related

IndependentRelated

Research Q:
Comparison/
differences

Fisher’s

exact test

(6.3)

Sign test

(6.5)

Wilcoxon

M-W test

(7.4)

Wilcoxon

Signed

Ranks test

(7.5)

t-test (8.4) t-test (8.5)

Proportions
test* (6.4)
Association
(class variable
is discrete

r×2 sample

χ^2 test of

homogeneity

—

Index 420