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The man page states that: '-w width Width of ASCII-art plot in characters, default is 74.' This is not entirely correct. The mini-help is more accurate: '-w : width of graph/test output (default 74 or terminal width)' In other words: the man page fails to explain that ministat will default to the terminal width, not 74. It will only fall back to 74 if stdout is not a TTY. Submitted by: Ben Hutchings <ben@decadent.org.uk> Approved by: philip (mentor) |
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| .. | ||
| chameleon | ||
| iguana | ||
| Makefile | ||
| ministat.1 | ||
| ministat.c | ||
| README | ||
$FreeBSD$
A small tool to do the statistics legwork on benchmarks etc.
Prepare your data into two files, one number per line
run
./ministat data_before data_after
and see what it says.
You need at least three data points in each data set, but the more
you have the better your result generally gets.
Here are two typical outputs:
x _1
+ _2
+--------------------------------------------------------------------------+
|x + x+ x x x + ++ |
| |_________|______AM_______________|__A___________M_______________||
+--------------------------------------------------------------------------+
N Min Max Median Avg Stddev
x 5 36060 36138 36107 36105.6 31.165686
+ 5 36084 36187 36163 36142.6 49.952978
No difference proven at 95.0% confidence
Here nothing can be concluded from the numbers. It _may_ be possible to
prove something if many more measurements are made, but with only five
measurements, nothing is proven.
x _1
+ _2
+--------------------------------------------------------------------------+
| + |
| x + +|
|x x x x + +|
| |_______________A_____M_________| |_M___A____| |
+--------------------------------------------------------------------------+
N Min Max Median Avg Stddev
x 5 0.133 0.137 0.136 0.1354 0.0015165751
+ 5 0.139 0.14 0.139 0.1394 0.00054772256
Difference at 95.0% confidence
0.004 +/- 0.00166288
2.95421% +/- 1.22812%
(Student's t, pooled s = 0.00114018)
Here we have a clearcut difference, not very big, but clear and unambiguous.