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 time I click the button it gives me two numbers. the number on the left is how many seconds since I begun timing and then number on the left is how many seconds since I last clicked.
Your TIMER data from 20 fast clicks
1 41.84375 41.84375
2 42.0625 .21875
3 42.25 .1875
4 42.4375 .1875
5 42.625 .1875
6 42.82813 .203125
7 43.03125 .203125
8 43.21875 .1875
9 43.4375 .21875
10 43.64063 .203125
11 43.82813 .1875
12 44.03125 .203125
13 44.23438 .203125
14 44.4375 .203125
15 44.64063 .203125
16 44.82813 .1875
17 45.04688 .21875
18 45.25 .203125
19 45.4375 .1875
20 45.64063 .203125
Your average time interval for 20 time intervals
.1898
(45.64063-41.84375)/20
Your frequency distribution for the 20 time intervals (interval, number of times it was observed)
.1875,7
.203125,9
.21875, 3
Your general comment to this point
Why did you observe only certain time intervals?
I think the unusual frequency is due to the measurements only going to a certain decimal place. Maybe it only goes by 5's after a certain point. The number is not useless unless you need a number that goes to the 1000th of a second.
What did you see when you looked at the differences between time successive time intervals?
the time counts in intervals of .01563.
Your time intervals for 7 complete breaths:
4.921875
7.015625
8.46875
8.046875
6.1875
6.203125
6.484375
6.359375
8.03125
6.96875
Your general comment to this point:
Why did you rarely, if ever, observe that same time interval twice?
the intervals were longer thus more room for differences
Do you think this program is accurate to .1 or .01 ...
A. Because once we get to the hundreth of a second .01, the numbers in the first part of the excercise were unusually constant which suggests it's inaccurate at this level
Copy of a few lines of your spreadsheet from the TIMER program.
series of breaths
event number clock time time interval
1 2686.906 2686.906
2 2691.828 4.921875
3 2698.844 7.015625
4 2707.313 8.46875
5 2715.359 8.046875
6 2721.547 6.1875
7 2727.75 6.203125
8 2734.234 6.484375
9 2740.594 6.359375
10 2748.625 8.03125
11 2755.594 6.96875
Your data look good.
After the due date we will be discussing this experiment further via an online forum.