[nzlug] Time Calculator

[Martin Shergold]

On 12/01/07, Marvin Pascual <marvin at pascual.com.ph> wrote:
> Thank you for all your suggestions.  Actually, I'm about to compute
> the analysis of variance (ANOVA) of 6 different elapsed time.  My data
> are listed below:
>
> -----------------------------------------------
> |    |   Xa    |   Xb    |   Xc    |    Xd    |
> -----------------------------------------------
> | T1 | 1:01.84 | 2:04.18 | 4:09.26 | 11:04.57 |
> -----------------------------------------------
> | T2 | 1:03.17 | 2:05.35 | 4:10.55 | 11:04.47 |
> -----------------------------------------------
> | T3 | 1:02.76 | 2:05.31 | 4:13.08 | 11:07.45 |
> -----------------------------------------------
> | T4 | 1:03.16 | 2:05.26 | 4:09.14 | 11:01.45 |
> -----------------------------------------------
> | T5 | 1:02.71 | 2:06.02 | 4:09.60 | 11:01.94 |
> -----------------------------------------------
> | T6 | 1:01.51 | 2:01.85 | 3:53.15 | 09:47.24 |
> -----------------------------------------------
>
> Now, I want to compute its weighted mean and the analysis of variance
> automatically in order to identify its significant difference.
> Although the presentation of results and its computation will be
> written manually, I just want to get the basic calculations
> automatically.

Hey Marvin,

I'm possibly not going to be of much help, but I think you're seeking
a round peg for what seems a square hole.

While it'd be easy enough to cobble together something to perform
arithmetic on durations; wouldn't it be simpler to just convert all
the samples to milliseconds, then use standard tools that work with
scalars, and convert back to durations for presentation of final
results?

Just a thought :)

Cheers,
Martin.