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 10 timed measurements, labeld 1-10 and the time differences between each button click.
** Your TIMER data from 20 fast clicks **
1 524.4336 524.4336
2 524.6055 .171875
3 524.7656 .1601563
4 524.9375 .171875
5 525.0859 .1484375
6 525.2461 .1601563
7 525.4141 .1679688
8 525.5781 .1640625
9 525.7461 .1679688
10 525.9063 .1601563
11 526.0781 .171875
12 526.2266 .1484375
13 526.3789 .1523438
14 526.5391 .1601563
15 526.7266 .1875
16 526.8984 .171875
17 527.0781 .1796875
18 527.2578 .1796875
19 527.4375 .1796875
20 527.6016 .1640625
21 527.7695 .1679688
22 527.9297 .1601563
23 528.1016 .171875
24 528.2891 .1875
** Your average time interval for 20 time intervals **
0.1678060
I got this number by saving the file from the timer as an excel file. I'm sure there is an even quicker way to do this, but all three columns were saved in the same A column in excel...so I cut the interval from each cell and then used the average function in excel to calculate it.
** Your frequency distribution for the 20 time intervals (interval, number of times it was observed) **
0.1484375, 2
0.1523438, 1
0.1601563, 5
0.1640625, 2
0.1679688, 3
0.1718750, 6
0.1796875, 3
0.1875000, 2
** Your general comment to this point **
** Why did you observe only certain time intervals? **
I think that the TIMER program reported the time .1875 seconds so frequently because it does not count all values...it uses and estimation. The time is not necessarily flawed or useless...just not 100% accurate.
** What did you see when you looked at the differences between time successive time intervals? **
I see that these numbers continue to repeat themselves as do the numbers in the time interval column. These numbers tell me that the TIMER program is using some sort of estimation of time as it is counting time.
** Your time intervals for 7 complete breaths: **
6.28125
9.421875
8.734375
9.804688
14.15625
13.59375
14.17969
13.9375
11.44531
15.88281
** Your general comment to this point: **
** Why did you rarely, if ever, observe that same time interval twice? **
This is exactly what we would expect b/c our lung capacity is the same for every breath taken, but the time for one full respiration cycle to occur is going to depend on how much you inhale and how much is exhaled.
** Do you think this program is accurate to .1 or .01 ... **
The TIMER program is capable of determining the time between two events accurately to within about .0001 second. Honestly my reasoning for this no scientific but looking at the first timed data and this timed data, the timer recorded to a minimum of .0001 seconds. I think that if it was less accurate, it would not give values past .0001 second.
** Copy of a few lines of your spreadsheet from the TIMER program. **
Breathing exercise in assignment 0
event number clock time
time interval
1 21747.43 21747.43
2 21753.71 6.28125
3 21763.13 9.421875
4 21771.87 8.734375
5 21781.67 9.804688
** **
about 1 hour
** **
&#This looks good. Let me know if you have any questions. &#