timer program

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 **

There is a table with 4 columns. The first columns tell the numerical number of how many times you have clicked the timer button. The second column tells you how much time has passed since you launched the program starting from time zero. The third column tells you how much time has passed since the last time you clicked the timer button. The fourth column puts all this information together.

** #$&*Your TIMER data from 20 fast clicks **

1 1.0 1.0

2 1.156 0.156

3 1.453 0.297

4 1.625 0.172

5 1.75 0.125

6 1.906 0.156

7 2.031 0.125

8 2.156 0.125

9 2.312 0.156

10 2.453 0.141

11 2.609 0.156

12 2.75 0.141

13 2.906 0.156

14 3.078 0.172

15 3.234 0.156

16 3.39 0.156

17 3.562 0.172

18 3.703 0.141

19 3.843 0.14

20 3.984 0.141

** #$&*Your average time interval for 20 time intervals **

avg= 0.20075

I added the first 20 toigether then divided by 20 (the number of values).

** #$&*Your frequency distribution for the 20 time intervals (interval, number of times it was observed) **

0.125, 3

0.14, 1

0.141, 4

0.156, 7

0.172, 3

0.297, 1

1.0, 1

** #$&*Your general comment to this point **

** #$&*Why did you observe only certain time intervals? **

The timer only reports to 4 significant digits so even if the time is 0.18746 then it will round up to 0.1875. The TIMER is not flawed or useless, but it does have error.

** #$&*What did you see when you looked at the differences between time successive time intervals? **

The last column has positive and negative numbers. In mine there are only positive numbers because it shows the absolute values. The difference in time passing can not be negative.

** #$&*Your time intervals for 7 complete breaths: **

2.594

2.828

3.687

3.531

3.469

3.516

3.375

3.453

3.437

3.594

29.828

** #$&*Your general comment to this point: **

** #$&*Why did you rarely, if ever, observe that same time interval twice? **

The breaths aren't as close together as the clicks so they are more random. This way the numbers aren't as close so the error isn't as significant as it was with the smaller numbers.

** #$&*Do you think this program is accurate to .1 or .01 ... **

I would say choice d because the TIMER reports values with 4 significant digits so it can go out to 0.0001 of a second.

** #$&*Copy of a few lines of your spreadsheet from the TIMER program. **

I couldn't get the TIMER.exe program to run so I can't save mine. I used the applet.

** **

30 minutes

** **

I would be better if it were easier to get the .exe program to run. It took me a while before I gave up on that.

With the applet, you can copy the contents of the box, put it in a notepad file, and save it. That's only a little less convenient than saving it directly. Otherwise there's not a lot of difference.

&#Good responses. Let me know if you have questions. &#