Phy231
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 **
An event number corresponding to how many times the button has been clicked followed by the amount of time the program has been running followed by the amount of time since the last click.
** Your TIMER data from 20 fast clicks **
1 94.09375 94.09375
2 94.24219 .1484375
3 94.35156 .109375
4 94.48438 .1328125
5 94.61719 .1328125
6 94.75 .1328125
7 94.88281 .1328125
8 95.00781 .125
9 95.14063 .1328125
10 95.25781 .1171875
11 95.40625 .1484375
12 95.52344 .1171875
13 95.66406 .140625
14 95.79688 .1328125
15 95.91406 .1171875
16 96.03906 .125
17 96.17969 .140625
18 96.3125 .1328125
19 96.44531 .1328125
20 96.60938 .1640625
21 96.72656 .1171875
22 96.875 .1484375
** Your average time interval for 20 time intervals **
0.13244 seconds
Excel
** Your frequency distribution for the 20 time intervals (interval, number of times it was observed) **
0.109375, 1
0.117188, 4
0.125, 2
0.118304, 1
0.132813, 8
0.140625, 2
0.148438, 3
0.164063, 1
** Your general comment to this point **
** Why did you observe only certain time intervals? **
It means the program is probably sampling the a fixed rate.
** What did you see when you looked at the differences between time successive time intervals? **
It is sampling about every 0.01563 seconds.
** Your time intervals for 7 complete breaths: **
5.992188
13
20.59375
25.14844
31.48438
39.33594
45.09375
52.09375
59.15625
64.85938
** Your general comment to this point: **
** Why did you rarely, if ever, observe that same time interval twice? **
We are sampling much more infrequently.
** Do you think this program is accurate to .1 or .01 ... **
b
** Copy of a few lines of your spreadsheet from the TIMER program. **
series of regular breaths time at beginning of inhalation
event number clock time time interval
1 5.992188 5.992188
2 13 7.007813
3 20.59375 7.59375
4 25.14844 4.554688
5 31.48438 6.335938
6 39.33594 7.851563
7 45.09375 5.757813
8 52.09375 7
9 59.15625 7.0625
10 64.85938 5.703125
** **
20 minutes
** **
Everything looks great.