phy 202
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 **
the numbered intervals and times in order, i noticed the time starts when the program is opened and not when the button is first clicked.  I'm not sure if this is correct but that seems to be the case.
It does that, so the first interval usually has to be disregarded (as you have done).
** Your TIMER data from 20 fast clicks **
 1    292.9883      292.9883
 2    293.082      .09375
 3    293.1914      .109375
 4    293.2852      .09375
 5    293.3789      .09375
 6    293.457      .078125
 7    293.5508      .09375
 8    293.6602      .109375
 9    293.7539      .09375
 10    293.8633      .109375
 11    293.957      .09375
 12    294.0508      .09375
 13    294.1602      .109375
 14    294.2383      .078125
 15    294.3477      .109375
 16    294.4414      .09375
 17    294.5664      .125
 18    294.6563      8.984375E-02
 19    294.7539      9.765625E-02
 20    294.8594      .1054688
** Your average time interval for 20 time intervals **
.09356
I subtracted the first number in the second column from the last number in the second column to find the derivative, then divided by 20.
** Your frequency distribution for the 20 time intervals (interval, number of times it was observed) **
.078125, 2
.08984375, 1
.09375, 8
.09765625, 1
.1054688, 1
.109375, 5
.125, 1
** Your general comment to this point **
** Why did you observe only certain time intervals? **
no, it must round up or down because all of my intervals ended in a 5 as well.
** What did you see when you looked at the differences between time successive time intervals? **
tells us how far off each time interval is from the previous one
** Your time intervals for 7 complete breaths: **
5.105469
5.65625
4.839844
5.40625
4.824219
5
5.339844
5.5
5.558594
5.390625
** Your general comment to this point: **
I just relaxed and breathed normally instead of taking deep breaths.
** Why did you rarely, if ever, observe that same time interval twice? **
the greater the interval, the more room for error or difference in each interval.
** Do you think this program is accurate to .1 or .01 ... **
D. .0001 seconds, based on the difference from one time interval to the next
** Copy of a few lines of your spreadsheet from the TIMER program. **
10 breaths		
event number	clock time	time interval
1	1089.184	1089.184
2	1094.289	5.105469
3	1099.945	5.65625
4	1104.785	4.839844
5	1110.191	5.40625
6	1115.016	4.824219
7	1120.016	5
8	1125.355	5.339844
9	1130.855	5.5
10	1136.414	5.558594
11	1141.805	5.390625
**  **
20 minutes
**  **
 Very good responses.  Let me know if you have questions.