PHY 231
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 the amount of time that the program has been running and the time interval between when I clicked it last and the present click.
** Your TIMER data from 20 fast clicks **
1 87.71875 87.71875
2 87.96875 .25
3 88.09375 .125
4 88.20313 .109375
5 88.35938 .15625
6 88.48438 .125
7 88.625 .140625
8 88.79688 .171875
9 88.9375 .140625
10 89.09375 .15625
11 89.26563 .171875
12 89.40625 .140625
13 89.5625 .15625
14 89.71875 .15625
15 89.875 .15625
16 90.01563 .140625
17 90.17188 .15625
18 90.32813 .15625
19 90.46875 .140625
20 90.64063 .171875
21 90.78125 .140625
22 90.92188 .140625
23 91.09375 .171875
24 91.23438 .140625
25 91.42188 .1875
** Your average time interval for 20 time intervals **
0.1481252
I found the difference between the last click and the first click by subtracting the first number from the last number, then I divided by 25.
** Your frequency distribution for the 20 time intervals (interval, number of times it was observed) **
.109375, 1
.125, 2
.140625, 5
.15625, 7
.171875, 3
.25, 1
87.71875, 1
** Your general comment to this point **
** Why did you observe only certain time intervals? **
When you click the button, it rounds to the closest time interval. No, it's not useless.
** What did you see when you looked at the differences between time successive time intervals? **
All of the numbers are factors of .01563.
** Your time intervals for 7 complete breaths: **
8.40625
12.28125
13.4375
13.6875
16.85938
18.14063
16.46875
14.6875
13.625
15.54688
** Your general comment to this point: **
** Why did you rarely, if ever, observe that same time interval twice? **
The more relaxed breathing you did, the slower your heart rate/breathing became, so the time interval wasn't the same.
** Do you think this program is accurate to .1 or .01 ... **
B.
Since all of the numbers are multiples of .01563, it's accuracy is limited to about one hundredth of a second.
** 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 1758.641 1758.641
2 1767.047 8.40625
3 1779.328 12.28125
4 1792.766 13.4375
** **
20 minutes
** **
&#Your work looks very good. Let me know if you have any questions. &#