[R] How to read ANOVA output

[Siri Bjoner]

He's already sent you some good advice.

Go to amazon.com and search for "basic statistics" + your area in  
"Books". Giving you specific recommendations will also take a lot of  
time, both for us and you, especially seeing as we don't really know  
what area or subject you're looking for.

Any basic book should give you enough knowledge to understand the  
basics of ANOVA and statistics in general. You should also find a book  
with basic problems and answers, so you can try them out yourself.

Siri.

Siterer "Stephen Liu" <satimis at yahoo.com>:

> ----- Original Message ----
>
> From: Gavin Simpson <gavin.simpson at ucl.ac.uk>
> To: Stephen Liu <satimis at yahoo.com>
> Cc: r-help at r-project.org
> Sent: Wed, August 18, 2010 4:13:03 PM
> Subject: Re: [R] How to read ANOVA output
>
> Hi Gavin,
>
>
> Thanks for your advice.
>
>
>> > tabA = c(5.67, 5.67, 5.55, 5.57)
>> > tabB = c(5.75, 5.47, 5.43, 5.45)
>> > tabC = c(4.74, 4.45, 4.65, 4.94)
>> > tabs = data.frame(tabA, tabB, tabC)
>>
>> > tablets = stack(tabs)
>>
>>
>> > anova(lm(values ~ ind, data = tablets))
>>> Analysis of Variance Table
>>> Response: values
>>>       Df  Sum Sq   Mean Sq  F value  Pr(>F)
>>> ind      2   2.05787  1.02893  45.239   2.015e-05 ***
>>> Residuals 9   0.20470  0.02274
>>> ---
>> >Signif. codes: 0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1
>
>
>> That output is designed to look like ANOVA tables from classical text
>> books, so any introductory textbook designed for your particular
>> background or area of knowledge would probably help you understand it.
>
> - snip -
>
> Could you pls shed me some hints where can I find the relevant  
> online document
> for my use?  Google search brought me tons of output.  To go through all it
> would take lengthy time.  Also it may lead me to the wrong direction.
>
> TIA
>
>
> B.R.
> Stephen
>
>
>
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