Your 'timer program' report has been received. Scroll down through the document to see any comments I might have inserted, and my final comment at the end.
** Your General Comment **
** Describe what you see on your first 10 clicks **
I see a list numbered one to ten with two columns.
** Your TIMER data from 20 fast clicks **
1 71.78516 71.78516
2 71.95703 .171875
3 72.08203 .125
4 72.23828 .15625
5 72.36328 .125
6 72.50391 .140625
7 72.70703 .203125
8 72.84766 .140625
9 72.95703 .109375
10 73.06641 .109375
11 73.17578 .109375
12 73.30078 .125
13 73.45703 .15625
14 73.56641 .109375
15 73.67188 .1054688
16 73.79688 .125
17 73.9375 .140625
18 74.09375 .15625
19 74.20313 .109375
20 74.32813 .125
21 74.42188 .09375
22 74.60938 .1875
23 74.73438 .125
24 74.96875 .234375
25 75.07813 .109375
26 75.26563 .1875
27 75.34375 .078125
28 75.46875 .125
29 75.59375 .125
30 75.71875 .125
31 75.875 .15625
32 76.01563 .140625
33 76.10938 .09375
34 76.25 .140625
35 76.34375 .09375
** Your average time interval for 20 time intervals **
.131836
I took the difference of my 21st time tick and my first time tick and divided by 20.
** Your frequency distribution for the 20 time intervals (interval, number of times it was observed) **
.09375, 1
0.1054688, 1
0.109375, 5
0.125, 5
0.140625, 3
0.15625, 3
0.171875, 1
0.203125, 1
** Your general comment to this point **
no questions so far
** Why did you observe only certain time intervals? **
There are probably only certain processor ticks that are allowed to be interrupted by a mouse click or by the timer program. I don't think the program is flawed or useless, it is just subject to other constraints within the OS.
** What did you see when you looked at the differences between time successive time intervals? **
Same as my previous answer, I think that the timer is subject to OS constraints.
** Your time intervals for 7 complete breaths: **
4.132813
3.558594
6.476563
4.679688
4.949219
4.335938
4.949219
4.757813
4.449219
4.820313
** Your general comment to this point: **
** Why did you rarely, if ever, observe that same time interval twice? **
Because the time frame is much larger, and it is much less likely that we approached any sort of constraint imposed by hardware or OS. We were still getting results according to those constraints, we just didn't notice, because each result is much larger.
** Do you think this program is accurate to .1 or .01 ... **
B, I think that the average difference of .01-.02 secs indicates an accuracy level of about .01 seconds.
** Copy of a few lines of your spreadsheet from the TIMER program. **
event number,clock time,time interval
1 , 940.0625 , 940.0625
2 , 944.1953 , 4.132813
3 , 947.7539 , 3.558594
** **
25 minutes including answering the questions
** **
Excellent data and answers to questions.
&#Let me know if you have questions. &#