basic statistics

Recap:
Basic statistics

Pairoj Boonluksiri, MD.
[e-mail]
Pediatric neurologist, Hatyai Hospital
Dip. clinical epidemiology สงขลานครินทร์
Cert. medical education, UIC, Chicago

CONTENTS

​You must know.....

• Data types: scale of measurement

• Hypothesis testing (statistical analysis)

  • Statistical terms

• Statitical analysis for 2-proportion and 2-mean comparison

​Data type and scale of measurement

Multiple Choice

Which of the following is the scale of measurement for test-scores?

• nominal

• ordinal

• interval

• ratio

​Normal distribution
Z-distribution

​Parametric test

Multiple Choice

Which of the following is the formula of "margin of error"?

​p-value = probability of true null hypothesis

​power = 1-beta

p-value

​Effect size

​alpha error
(type 1 error)

​beta error
(type 2 error)

​power
(1-beta)

Multiple Choice

Which of the following is the meaning of "alpha error"?

• accept the true null hypothesis

• reject the true null hypothesis

• accept the false null hypothesis

• accept the false null hypothesis

​2-mean comparison

Multiple means comparison (more than 2 groups)

equal variance
no outliers
normal disribution is not improtant

​

​Fisher's exact