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 **
I have gotten a late start on these experiments, but am trying to complete them now in a timely fashion.
** Describe what you see on your first 10 clicks **
I see a bunch of different times recorded with rounded decimal places. It also displays the last time recorded at the top.
** Your TIMER data from 20 fast clicks **
1 105.6719 105.6719
2 105.8125 .140625
3 106.0625 .25
4 106.2188 .15625
5 106.3438 .125
6 106.4844 .140625
7 106.6563 .171875
8 106.8125 .15625
9 106.9688 .15625
10 107.1094 .140625
11 107.2656 .15625
12 107.4219 .15625
13 107.5781 .15625
14 107.7188 .140625
15 107.875 .15625
16 108 .125
17 108.1563 .15625
18 108.3438 .1875
19 108.5 .15625
20 108.6563 .15625
21 108.8125 .15625
22 108.9531 .140625
** Your average time interval for 20 time intervals **
0.16
Calculated by averaging the first 20 intervals on the calculator.
** Your frequency distribution for the 20 time intervals (interval, number of times it was observed) **
.140625, 5
.25, 1
.15625. 11
.125, 2
.171875, 1
.1875, 1
** Your general comment to this point **
Is there a faster way to take the average of the numbers?
** Why did you observe only certain time intervals? **
The timer probably reported that time so frequently because it was rounding to the closest number given the click.
** What did you see when you looked at the differences between time successive time intervals? **
I see that the timer appears to go faster and slower at different intervals, denoted by the negetive and positive signs.
** Your time intervals for 7 complete breaths: **
13.29688
2.921875
3.28125
3.609375
3.390625
3.609375
3.0625
3.21875
3.0625
3.0625
** Your general comment to this point: **
My intervals seemed to be shorter than yours!
** Why did you rarely, if ever, observe that same time interval twice? **
We expect it because our clicks are less immediate and breaths are less predictable.
** Do you think this program is accurate to .1 or .01 ... **
I think d is correct, because it seems like the timer is estimating the times to more decimal places.
** Copy of a few lines of your spreadsheet from the TIMER program. **
first breath exp for physics class
event number,clock time,time interval
1 , 13.29688 , 13.29688
2 , 16.21875 , 2.921875
3 , 19.5 , 3.28125
4 , 23.10938 , 3.609375
5 , 26.5 , 3.390625
6 , 30.10938 , 3.609375
7 , 33.17188 , 3.0625
8 , 36.39063 , 3.21875
9 , 39.45313 , 3.0625
10 , 42.51563 , 3.0625
** **
30 minutes
** **
&#This looks good. Let me know if you have any questions. &#