Date last tested: 9/23/05.

 

Comparison of ‘ANOVA’ to other public software programs and statistical textbook.

 

F statistics  &  two-tailed p-value

 

Data input

 

95% CI ,

ni, meani, si

95% confidence interval,

Sample size, mean and std dev.

of each group

95%,

63, 55.1, 10.93

17, 47.59, 7.08

15, 49.4, 10.2

95%,

200, 3.78, .79

200, 3.3, .77

50, 3.32, .86

200, 3.23, .78

200, 2.73, .81

200, 2.59, .82

OpenEpi

F statistics

p-value

 

 

4.6

0.012

 

57.99

<0.001

 

Rosner

F statistics

p-value

 

 

4.6

0.012

 

58.0

<0.001

 

EpiInfo (DOS)

F statistics

p-value

 

 

4.6

0.012

 

57.99

<0.001

 

‘CI’ Confidence interval;  ni sample size of Group i;   ‘mi  sample mean of Group i;   si  standard deviation of Group i mean; 

 

Reference:

·         Bernard Rosner. Fundamentals of Biostatistics (5th edition).

·         EpiInfo6 (DOS version). Epidemiology program office, CDC. (EpiInfo software downloaded from ‘www.cdc.gov’).