timer program

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 know I am very much behind and I hope to get everything caught up soon. My computer would no play the video clips and I had to get it repaired, the cd drive was bad. However I also was taking 3 additional classes as well, which I am now finished with.

** Describe what you see on your first 10 clicks **

As I began clicking, I saw rows of 3 columns displayed. The first column was numbered 1-10, the second was in asending order from 75.9- 93.2, the third was in desending order from 75.9- .67

** Your TIMER data from 20 fast clicks **

1 1001.219 1001.219

2 1001.438 .21875

3 1001.625 .1875

4 1001.813 .1875

5 1002.188 .375

6 1002.375 .1875

7 1002.531 .15625

8 1002.688 .15625

9 1003.109 .421875

10 1003.297 .1875

11 1003.453 .15625

12 1003.625 .171875

13 1003.797 .171875

14 1003.984 .1875

15 1004.172 .1875

16 1004.328 .15625

17 1004.516 .1875

18 1004.875 .359375

19 1005.094 .21875

20 1005.297 .203125

** Your average time interval for 20 time intervals **

50.26485

&#

Intervals are typically between .1 sec and .25 sec. Smaller intervals are sometimes observed between quick clicks--some people are just plain quick on this exercise. Intervals greater than .3 seconds or so are almost certainly not the result of 'quick clicks'; if you had intervals in this range within your sequence of clicks then you should have tried another sequence, until you could get 20 good clicks. While you do want to report the TIMER's complete output, you should not include in your analysis intervals that do not correspond to the quantity being observed.For example, you might well have something like 30 seconds, or more, between the time you started the program and the time you started your 'quick clicks'. You would not report that as one of your intervals. You might have a number of lapses between sequences of quick clicks, and you might have made an extra click after finishing the quick-click sequence. These long intervals would not be reported in your frequency distribution. &#

I took the total time from the second column in row 20, and divided it by 20 to get the average.

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

.15625, 4

.171875, 2

.1875, 7

.203125, 1

.21875, 2

.359375, 1

.375, 1

.421875, 1

1001.219, 1

** Your general comment to this point **

My last time on the list above was the time for the first click, which is why it is so high. Should I have included it.

1001.219 sec is not among the time intervals that correspond to the thing you were timing.

This is the number of seconds since the computer was turned on.

** Why did you observe only certain time intervals? **

I believe the time intervals were rounded off. No, I don't believe the timer is flawed. No, it is not useless.

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

All I see is the difference from one time to the next. I'm not sure what this is telling me.

** Your time intervals for 7 complete breaths: **

12.28125

14.25

15.07813

13.8125

15.79688

14.92188

15.03125

17.23438

16.67188

17.29688

** Your general comment to this point: **

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

This happened because our breathing was relaxed and at random intervals without trying to hurry.

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

I believe the answer is D, because when I looked back at my answers for the fast click, the last digit was the same. And some of my recorded times were only 4 digits.

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

series of regular breaths time at beginning of inhalation

event number clock time time interval

1 2965.875 2965.875

2 2978.156 12.28125

3 2992.406 14.25

4 3007.484 15.07813

** **

It took between 1 hr. and 1.5 hr's.

** **

My computer skills are not real good, thus slowing me considerably.

You did a good job of reporting this experiment. Unfortunately there is a fair amount of typing in this course. You can use reasonable abbreviations; I'll let you know if something is too abbreviated.