To find the average number of heartbeats per second, we need to know the total number of heartbeats and the total time in seconds.
From your description, we know the y-axis represents heartbeats ranging from 0 to 18, and the x-axis represents time ranging from 0 to 12 seconds.
If we assume the resting heart rate from the graph is at the highest value (for this example, let's assume 18 heartbeats at 12 seconds), we can calculate the average as follows:
- Total heartbeats = 18 (as a hypothetical example)
- Total time = 12 seconds
Average heartbeats per second = Total heartbeats / Total time = 18 / 12 = 1.5 beats per second.
However, based on your provided responses, it looks like none of the options indicate exactly 1.5 beats per second. The closest response using fractions is:
1/2 beats per second, but that does not match our calculation.
Given options:
- 3 beats per second
- 2 beats per second
- 1/2 beats per second
If we clarify that the observed heartbeat rate was lower, we could conjecture the right one based on provided choices.
If your actual line on the graph indicates a different value than 18 (for example, averaging it out across the described increments), that may lead to more precise selections aligning with the correct average.
Could you confirm the heart rate depicted on the graph (or clarify any readings)? Only then can we accurately gauge an average and determine which of your option selections is correct.
3 answers