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 two columns of numbers. The left column is a list of the number of seconds the program has been active since I started the program, and the right columns is the interval of time between clicks.
** Your TIMER data from 20 fast clicks **
2 217.6563 .296875
3 217.8438 .1875
4 217.9531 .109375
5 218.0469 .09375
6 218.1563 .109375
7 218.2344 .078125
8 218.3438 .109375
9 218.4531 .109375
10 218.5469 .09375
11 218.6563 .109375
12 218.8438 .1875
13 218.9531 .109375
14 219.5156 .5625
15 219.6094 .09375
16 219.7188 .109375
17 219.7969 .078125
18 219.8906 .09375
19 220.0781 .1875
20 220.1875 .109375
21 220.2813 .09375
22 220.3906 .109375
23 220.5781 .1875
** Your average time interval for 20 time intervals **
0.146306818
I opened up Excel and typed in the value of each interval and then performed the average function.
** Your frequency distribution for the 20 time intervals (interval, number of times it was observed) **
.296875, 1
.1875, 4
.109375, 9
.09375, 5
.078125, 2
.5625, 1
** Your general comment to this point **
** Why did you observe only certain time intervals? **
** What did you see when you looked at the differences between time successive time intervals? **
That the smallest interval that the timer can keep is 0.01563 seconds.
** Your time intervals for 7 complete breaths: **
26.15625
6.84375
8.828125
9.140625
9.171875
9.03125
9.5625
9.140625
9.765625
8.296875
7.234375
** Your general comment to this point: **
You breathe a lot slower than I do. Does that make you more cardiovasculary fit?=)
Could be that I have a higher lung capacity and a lower metabolism. Lung capacity has always been pretty high. I'm in good shape for my age, but you appear to be in pretty good shape for your age, and given our ages there is simply no way I'm in better shape than you are. Breathing rates notwithstanding.
** Why did you rarely, if ever, observe that same time interval twice? **
This is more likely to be expected, because the same margin of error would cause a greater difference when the intervals increased with the collected data.
** Do you think this program is accurate to .1 or .01 ... **
B, because the smallest interval between the intervals is the unit of time in which the clock speed of the computer limits the timer. This means that the computer is limited a unit of time no smaller than about 0.015625,or 1/64 of a second.
** Copy of a few lines of your spreadsheet from the TIMER program. **
1 26.15625 26.15625
2 33 6.84375
3 41.82813 8.828125
** **
20 minutes
** **
&#Very good work. Let me know if you have questions. &#