timer program

Your work on timer program 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

Each click two numbers pop up. The first number is how many seconds have passed since the initial click and the second number signifies the number of seconds between subsequent clicks.

Your TIMER data from 20 fast clicks

1 20.73438 20.73438

2 20.91406 .1796875

3 21.07031 .15625

4 21.21094 .140625

5 21.32813 .1171875

6 21.46094 .1328125

7 21.60156 .140625

8 21.74219 .140625

9 21.89063 .1484375

10 22.03906 .1484375

11 22.17969 .140625

12 22.32813 .1484375

13 22.49219 .1640625

14 22.64063 .1484375

15 23.35938 .71875

16 23.5 .140625

17 23.66406 .1640625

18 23.80469 .140625

19 23.94531 .140625

20 24.19531 .25

21 24.35156 .15625

22 24.625 .2734375

Your average time interval for 20 time intervals

Take (24.19531-20.73438)/20=0.1730465

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

.1171875,1

.1328125,1

.140625,7

.1484375,4

.15625,1

.1640625,2

.1796875,1

.25,1

.71875,1

Your general comment to this point

Why did you observe only certain time intervals?

These recorded times seem to be representative of some sort of fraction of a second. There is some flaw in the timer program, but it is not useless because it is still a good estimation.

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

These numbers are fairly consistent and small, so the TIMER program represents a good estimation.

Your time intervals for 7 complete breaths:

4.6875

4.78125

5.492188

4.9375

4.59375

3.914063

3.6875

3.976563

4.335938

Your general comment to this point:

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

The fast clicks were more likely to fall within a certain amount of time surrounding the accuracy unit. For example if the timer gave an accuracy of plus or minus one second. Faster clicks would most likely round to the closest accurate value. If the answers were any more detailed it would signify more accuracy.

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

.01 because the fast click interval differences were on the order of .01.

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

The version of timer with file options will not work on my computer, if this is a problem let me know.