AIDS {gpk}

AIDS Data Set

Description

A : Sr. no B : Pre test score of the student C : Post test score of the student D : Subject Specialization in code numbers 1: Chemistry (Special) 2: Botany (Special) 3: Microbiology (SYBSc level) 4: Microbiology (Special level) 5: Zoology (Special) E: Subject name

Usage

data(AIDS)

Format

A data frame with 72 observations on the following 5 variables.

SR.NO

Serial Number

PRE.TEST

Pre-test

POST.TEST

Post-test

Sub.Code

Subject code

Subject

a factor with levels Bot Chem Micro Sy Micro TY Zoology

Details

In disease management the proverb 'prevention is better than cure' is very relevant. Awareness is the first step in prevention. Hence any materials prepared to enhance awareness constitute a potent weapon in the hands of public health personnel. Two questions are of interest. Is the post-test score significantly higher than the pretest score? Are differences uniform across subjects and years?

Source

http://ces.iisc.ernet.in/hpg/nvjoshi/statspunedatabook/databook.html

Examples

data(AIDS)
head(AIDS)
t.test(AIDS$PRE.TEST,AIDS$POST.TEST,var.equal=TRUE)
t.test(AIDS$PRE.TEST,AIDS$POST.TEST,var.equal=FALSE)