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

1 46.42188 46.42188

2 49.32813 2.90625

3 51.75 2.421875

4 52.73438 .984375

5 53.34375 .609375

6 53.92188 .578125

7 54.53125 .609375

8 55 .46875

9 55.40625 .40625

10 55.8125 .40625

Your TIMER data from 20 fast clicks

1 .84375 .84375

2 1.125 .28125

3 1.375 .25

4 1.640625 .265625

5 1.90625 .265625

6 2.140625 .234375

7 2.390625 .25

8 2.625 .234375

9 2.859375 .234375

10 3.09375 .234375

11 3.328125 .234375

12 3.5625 .234375

13 3.8125 .25

14 4.046875 .234375

15 4.28125 .234375

16 4.53125 .25

17 4.78125 .25

18 5.03125 .25

19 5.3125 .28125

20 5.578125 .265625

Your average time interval for 20 time intervals

0.27890625

Opened as comma separated file in Open Office Calc, used AVERAGE function.

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

.234375, 8

.25, 6

.265625, 3

.28125, 2

.84375, 1

Your general comment to this point

Why did you observe only certain time intervals?

The timer program is not precise enough to record that many significant figures. It can still be useful if you don't need any more precision than this.

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

The last column also has repeating values, suggesting that the program cannot precisely record that many significant figures.

Your time intervals for 7 complete breaths:

2.359375

3.796875

4.3125

4.03125

3.609375

3.78125

3.765625

3.859375

3.5625

3.625

Your general comment to this point:

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

The timer program is limited in distinguishing intervals very close together, but can easily differentiate intervals more spaced out.

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

B, because beyond .01s in the first experiment, there are multiple duplicate values, suggesting the .001 digit is not being accurately recorded.

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

2.36 2.36

6.16 3.8

10.47 4.31

14.5 4.03

18.11 3.61

21.89 3.78

25.66 3.77

29.52 3.86

33.08 3.56

36.7 3.63