Statistics, Coke-machine at DIKU

Here are some statistics based on the log-files from the Coke-machine located at DIKU:

Graphs

Cola's sold, percentage/hour:

This graph shows at which hours of the day the Coke-machine sells the most bottles.

Graph

Obviously, there are people buying Coca Cola at all hours of the day at DIKU. But 9-11 seem to be the most popular time...

Cola's sold, percentage/weekday:

This graph shows at which weekdays the Coke-machine sells the most bottles.

Graph

Saturday and sunday are slow days, but now that slow!

Cola's sold, per day:

This graph shows the number of bottles sold, as a function of the day-number (the day the log was started is numbered 0, second day has number 1, and so on).

Graph

Cola's sold, accumulated:

This graph shows the accumulated number of bottles sold, as a function of the day-number (start-of-log is number 0, second day is number 1, and so on).

Graph

Cola's sold, per week:

This graph shows the number of bottles sold in each week (the log begins at week 3, 1997 - the last week of 1997 is numbered 52 on the graph, and the first week of 1998 is numbered 1+52=53, second 54, and so on)).

Graph

Key statistics

Average sale:

Cokes sold per day:	38
Coke lights sold per day:	5
Bottles sold per day:	43

Distribution:

Coke:	88%
Coke light:	11%

Correct change required:

22% of the time.

Empty columns (% of time):

1	53%
2	29%
3	21%
4	14%
5	9%
6	26%
All	5%

("All" means that all columns were empty at the same time).

Coke vs. Coke light:

20% of the total number of Coke Lights sold, were sold while regular Coke wasn't available.

Key figures

Log:

Logs start at:	1 Feb 1997
And end at:	2 Dec 1998
Totalling:	668 days

Sale:

Cokes sold:	25792
Coke lights sold:	3450
Coke lights sold while Coke soldout:	700
Bottles sold:	29242

Column-wise:

1	5921 (20%)
2	5690 (19%)
3	5324 (18%)
4	4823 (16%)
5	4034 (13%)
6	3450 (11%)

Empty:

Column:	Hours empty:	Total hours:
1	8613	16043
2	4714	16039
3	3428	16039
4	2257	16039
5	1583	16043
6	4328	16039
All	922	16043

("All" means that all columns were empty at the same time).

Notes

Round-off errors may introduce slight inaccuracies (percentages not summing up etc.).

More...

If you have any ideas of interesting statistics we could generate, please let us know - email us at kantinemaskine@diku.dk.

(This page was generated Wednesday 2 Dec 98, 1:05, generator curtesy of Adam Sj�gren)