Phy 121
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 **
it gave 10 numbers that increased with each click in the first column and in the second column 10 smaller numbers that increased with each click
** Your TIMER data from 20 fast clicks **
1 375.9375 375.9375
2 376.1406 .203125
3 376.2969 .15625
4 376.4375 .140625
5 376.5938 .15625
6 376.7578 .1640625
7 376.9141 .15625
8 377.0859 .171875
9 377.25 .1640625
10 377.4141 .1640625
11 377.5703 .15625
12 377.7188 .1484375
13 377.8828 .1640625
14 378.0391 .15625
15 378.1953 .15625
16 378.3594 .1640625
17 378.5156 .15625
18 378.6797 .1640625
19 378.8438 .1640625
20 379.0234 .1796875
21 379.2109 .1875
22 380.2344 1.023438
** Your average time interval for 20 time intervals **
0.20463145238
i added all the numbers and divided by 21 which was the number of clicks
That is one of the two ways to find the average. However your result doesn't make sense. None of the time intervals that correspond to quick clicks are as great at your stated average; the average can't be greater than all the numbers in the set.
** Your frequency distribution for the 20 time intervals (interval, number of times it was observed) **
.140625, 1
.1484375, 1
.15625, 7
.1640625, 7
.171875, 1
.1796875, 1
.1875, 1
1.023438, 1
** Your general comment to this point **
** Why did you observe only certain time intervals? **
the program probably rounded the time, the program probably could not discriminate that small amount of time, no the program isn't flawed, no it is not useless
** What did you see when you looked at the differences between time successive time intervals? **
it appears that the smallest amount of time the program will discriminate is .015625
** Your time intervals for 7 complete breaths: **
10.04688
9.570313
9.226563
8
9.25
11.5
10.60156
10.27344
10.22656
12.27344
** Your general comment to this point: **
i'm not sure if i did this right, my interval were not spaced as far as you intervals
** Why did you rarely, if ever, observe that same time interval twice? **
all breathing is not on the same interval throughout the day
** Do you think this program is accurate to .1 or .01 ... **
statement b, the timer program is capable of determing the time between two events accurately to within about .01 second
** Copy of a few lines of your spreadsheet from the TIMER program. **
event number clock time time interval
1 80.25781 80.25781
2 90.30469 10.04688
3 99.875 9.570313
4 109.1016 9.226563
5 117.1016 8
** **
it has taken approximately 1 hour to complete
** **
i am slow on the computer, therefore it is taking me longer than most to complete the experiments and assignments
Your completion times are a little longer than the average, but they are well within the range of what students report.
You did well on this experiment. However the mean you report does not correspond to the quick-click data. I believe you included a time interval that doesn't correspond to the interval between two quick clicks.
I should take you only a couple of minutes to locate the discrepancy and correct it. Let me know if you don't see it.
&#Please see my notes and submit a copy of this document with revisions and/or questions, and mark your insertions with &&&& (please mark each insertion at the beginning and at the end). &#