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 **
1/23/10 at 7:50 p.m.
** Describe what you see on your first 10 clicks **
It gives me a start time and then indicates the time each time I click. Out from the time tells how much time has passed.
** Your TIMER data from 20 fast clicks **
1 120.6172 120.6172
2 120.7734 .15625
3 120.9141 .140625
4 121.0547 .140625
5 121.2266 .171875
6 121.3672 .140625
7 121.5234 .15625
8 121.6641 .140625
9 121.8203 .15625
10 121.9766 .15625
11 122.1172 .140625
12 122.2734 .15625
13 122.3984 .125
14 122.5547 .15625
15 122.6797 .125
16 122.8203 .140625
17 122.9609 .140625
18 123.1016 .140625
19 123.2422 .140625
20 123.3672 .125
21 123.4922 .125
22 123.8984 .40625
** Your average time interval for 20 time intervals **
.1375
(.15625 *6) +(.140625*9)+(.171875*1) +(.125*4)=2.75
2.75/20=.1375
** Your frequency distribution for the 20 time intervals (interval, number of times it was observed) **
.125, 4
.140625, 9
.15625, 6
.171875, 1
** Your general comment to this point **
** Why did you observe only certain time intervals? **
No, that just means that it is not a perfect system and is just somewhat accurate.
** What did you see when you looked at the differences between time successive time intervals? **
.01563 or .015625 so very close to each other seems to be the time interval that is occuring most frequently. This doesn't seem possible so this tells us that the timer is not perfectly accurate.
** Your time intervals for 7 complete breaths: **
1157.148
1159.094
1161.891
1164.242
1167.039
1170.016
1172.5
1175.211
1177.664
1180.188
1182.578
** Your general comment to this point: **
** Why did you rarely, if ever, observe that same time interval twice? **
These are probably more accurate than the fast clicks since I don't have any repeat intervals.
** Do you think this program is accurate to .1 or .01 ... **
I'd say that the answer is a since it seemed to do a better job the second go round when it was a slower pace.
** Copy of a few lines of your spreadsheet from the TIMER program. **
I don't have Excel on my laptop. If I need to use it in the future, I will use our other computer that has it. It was copied to notepad instead as seen below.
Relaxed Breaths Timer Practice
event number,clock time,time interval
1 , 1157.148 , 1157.148
2 , 1159.094 , 1.945313
3 , 1161.891 , 2.796875
4 , 1164.242 , 2.351563
5 , 1167.039 , 2.796875
** **
About 30 min.
** **
&#Your work looks very good. Let me know if you have any questions. &#