Phys 201
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 of time intervals with exact time measurement.
** Your TIMER data from 20 fast clicks **
1 376.3438 376.3438
2 376.5156 .171875
3 376.6563 .140625
4 376.7969 .140625
5 376.9375 .140625
6 377.0938 .15625
7 377.2656 .171875
8 377.4219 .15625
9 377.5781 .15625
10 377.7344 .15625
11 377.9063 .171875
12 378.0469 .140625
13 378.2188 .171875
14 378.5 .28125
15 378.6875 .1875
16 378.8438 .15625
17 378.9844 .140625
18 379.125 .140625
19 379.2813 .15625
20 379.4219 .140625
21 379.5781 .15625
22 379.7656 .1875
** Your average time interval for 20 time intervals **
378.0319
added up the times and divided by 22
You added up clock times, not time intervals. The time intervals were all less that a second, so their average is less than a second.
** Your frequency distribution for the 20 time intervals (interval, number of times it was observed) **
.171875, 4
.140625, 8
.15625, 7
.28125, 1
.1875, 1
** Your general comment to this point **
** Why did you observe only certain time intervals? **
The timer program might be rounding the time to the closest number. I think it would then be flawed because it would then not be as accurate. It doesn't mean that it is useless but it does mean that it is not as accurate as we thought.
** What did you see when you looked at the differences between time successive time intervals? **
the numbers are much more frequent.
** Your time intervals for 7 complete breaths: **
2.296875
5.3125
8.375
12.39063
15.9375
18.57813
21.51563
24.42188
26.70313
29.07813
** Your general comment to this point: **
** Why did you rarely, if ever, observe that same time interval twice? **
because people never breathe at exactly the same rate.
** Do you think this program is accurate to .1 or .01 ... **
D.
Because if you look at the difference between the intervals it is not the significant and therfore an accurate program
** Copy of a few lines of your spreadsheet from the TIMER program. **
Assignment 0 breathes exp. 1
event number clock time time interval
1 2.296875 2.296875
2 5.3125 3.015625
3 8.375 3.0625
4 12.39063 4.015625
5 15.9375 3.546875
6 18.57813 2.640625
7 21.51563 2.9375
8 24.42188 2.90625
9 26.70313 2.28125
10 29.07813 2.375
** **
30 min
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