PHY 122
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 **
There is a list of 10 sets of numbers.
** Your TIMER data from 20 fast clicks **
1 316.6797 316.6797
2 316.7109 .03125
3 317.1797 .46875
4 317.2266 .046875
5 317.6172 .390625
6 317.6641 .046875
7 318.0859 .421875
8 318.125 .0390625
9 318.5625 .4375
10 318.6094 .046875
11 319 .390625
12 319.0469 .046875
13 319.4688 .421875
14 319.5156 .046875
15 319.9375 .421875
16 319.9688 .03125
17 320.4219 .453125
18 320.4688 .046875
19 320.9063 .4375
20 320.9531 .046875
21 321.4531 .5
** Your average time interval for 20 time intervals **
.238671875
I took about counted up how many time each interval occurred. I then multipled the interval by the number of times it occurred and then added those up and divide the resulting number by 20.
** Your frequency distribution for the 20 time intervals (interval, number of times it was observed) **
.03125, 2
.46875, 1
.046875, 7
.390625, 2
.421875, 3
.0390625, 1
.4375, 2
.453125, 1
.5, 1
** Your general comment to this point **
** Why did you observe only certain time intervals? **
The timer program may have been rounding up the numbers and you had several intervals that were in that range. I am not sure why there were not more times like .1830 and .1769. No, the timer program is not flawed and not useless.
** What did you see when you looked at the differences between time successive time intervals? **
The third column shows the difference between the different intervals. You can see that there are several times that there is the same difference between intervals. Perhaps that is why that particular interval occurred so many times.
** Your time intervals for 7 complete breaths: **
3.4375
4.101563
3.679688
4.398438
3.898438
3.882813
4.773438
3.921875
3.867188
** Your general comment to this point: **
Because there is more time between the breaths than the fast clicks.
** Why did you rarely, if ever, observe that same time interval twice? **
I chose c. It would seem that this is a pretty fair choice considering how far out the timer goes in decimal places.
** Do you think this program is accurate to .1 or .01 ... **
Series of regular breaths time at beginning of inhalation
event number clock time time interval
1 19.01563 19.01563
2 22.45313 3.4375
3 26.55469 4.101563
4 30.23438 3.679688
5 34.63281 4.398438
6 38.53125 3.898438
7 42.41406 3.882813
8 47.1875 4.773438
9 51.10938 3.921875
10 54.97656 3.867188
** Copy of a few lines of your spreadsheet from the TIMER program. **
50 minutes
** **
** **
Very good.
Note that it's optional for you to repeat labs you completed in Physics I.