Phy 232
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 **
The far left column gives the interval number starting at 1. The middle column gives the beginning time of the interval and the right column tells how long the interval ran for.
** #$&*Your TIMER data from 20 fast clicks **
1 20.98438 20.98438
2 21.14063 .15625
3 21.27734 .1367188
4 21.41016 .1328125
5 21.54297 .1328125
6 21.67578 .1328125
7 21.80859 .1328125
8 21.94531 .1367188
9 22.07813 .1328125
10 22.19922 .1210938
11 22.32031 .1210938
12 22.45313 .1328125
13 22.59766 .1445313
14 22.74609 .1484375
15 22.87891 .1328125
16 23.01172 .1328125
17 23.13281 .1210938
18 23.26563 .1328125
19 23.39063 .125
20 23.51172 .1210938
21 23.64453 .1328125
22 23.78906 .1445313
** #$&*Your average time interval for 20 time intervals **
.1208984
I added the first 20 intervals and divided by 20.
Good.
You could also have subtracted clock times and divided by 20.
** #$&*Your frequency distribution for the 20 time intervals (interval, number of times it was observed) **
.1210938, 4
.125, 1
.1328125, 10
.1367188, 2
.1445313, 1
.1484375, 1
.15625, 1
** #$&*Your general comment to this point **
** #$&*Why did you observe only certain time intervals? **
The timer program is not flawed or useless. It just appears that within certain time ranges there are certain times that the program reports.
** #$&*What did you see when you looked at the differences between time successive time intervals? **
Many of the numbers in the last column are the same. This says that the timer program is not accurate to the number of significant figures that it displays.
GOod.
In fact the times are all multiples of 1/64 second.
** #$&*Your time intervals for 7 complete breaths: **
9.507813
10.22656
10.94141
8.910156
10.26172
10.96484
6.945313
10.18359
10.64844
7.355469
** #$&*Your general comment to this point: **
** #$&*Why did you rarely, if ever, observe that same time interval twice? **
This most likely occurred because as the length of the time intervals increase, one decreases the likelihood of clicking at an interval close to another interval.
** #$&*Do you think this program is accurate to .1 or .01 ... **
I believe that the answer is B because as shown by the differences between the times intervals, past the second decimal point all of the differences are essentially the same which is humanly impossible to do.
** #$&*Copy of a few lines of your spreadsheet from the TIMER program. **
Breathing Data
event number clock time time interval
1 30.77344 30.77344
2 40.28125 9.507813
3 50.50781 10.22656
4 61.44922 10.94141
5 70.35938 8.910156
6 80.62109 10.26172
** **
30 minutes
** **
Your work looks good. See my notes. Let me know if you have any questions.