timer program

Phy 201

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 **

Submitted June 4 1:50

** #$&* Describe what you see on your first 10 clicks **

It gives a list of different numbers the first list being the number of row starting at 1 and going to 10. The addition columns are the first one seems to be the amount of time passed and the third column the amount of time between each click. The final one sums it all up in a table.

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

1 0.573 0.573

2 0.741 0.168

3 0.886 0.145

4 1.053 0.167

5 1.213 0.16

6 1.397 0.184

7 1.566 0.169

8 1.741 0.175

9 1.917 0.176

10 2.101 0.184

11 2.27 0.169

12 2.469 0.199

13 2.638 0.169

14 2.797 0.159

15 2.981 0.184

16 3.157 0.176

17 3.333 0.176

18 3.509 0.176

19 3.709 0.2

20 3.98 0.271

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

.199

I got my result by adding up the 20 and then dividing by 20 just as you did.

Good, but:

&#As a quick scan of your data shows, the first interval reported above does not correspond to the interval you are timing. A quick scan of the data shows that this interval is inconsistent with the other intervals you observed.
If you included that data in your analysis, your results will be affected. If you look at the valid intervals, and your calculated mean, you will see that your mean doesn't lie 'in the middle' of your valid intervals. Often, in fact, this error leads to a mean interval length that is greater than any of the valid interval lengths.
As long as your calculations are otherwise correct, I'm not going to ask you to resubmit anything However you should make these comparisons yourself, and do submit a revision if you do have questions. To revise, simply insert your revisions, marking each insertion before and after with #### so I can easily identify it. &#

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

0.145

0.159

0.16

0.167

0.168

0.169, 3

0.175

0.176, 4

0.184, 3

0.199

0.2

0.271

0.573

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

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

I'm not sure why it reported it that many times. Most of my times it reported all differently other than a few numbers.

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

It appears to report that data relatively accurately.

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

1.408

3.608

3.2

3.224

3.632

3.375

2.12

2.912

3.264

3.32

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

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

Because we were relaxing between each click and our breaths are not exact time intervals apart.

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

d. The TIMER program is capable of determining the time between two events accurately to within about .0001 second.

The timer program seems to be extremely accurate at determining time between events. There was a wide variation among each of the figures it gave me which makes me believe it is accurate to this extent.

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

I could not get the Timer.exe program to work. I do not understand how to download the timer.exe program.

30 min.

If you could explain to me how to download the timer.exe program better it would be greatly appreciated.

&#If the given instructions don't work, there is no point in spending more time trying to get them to work. Chances are your system just won't allow you to run that program. I have systems in the lab that won't run it, and I've never been able to get them to work. &#