Graphing and statistics
Thu, Sep 3, 2026 · Week 2 · Principles of Biomedical Technology (Principles of Biomedical Science)
Today's goal: Build a graph from collected data and compute descriptive statistics to summarize a sample.
What a finished product looks like
This is a model of the work you should turn in today. Use it to check your own: match the structure and the level of detail, do not copy it. Your data and wording should be your own.
I measured the resting heart rate of four classmates, three trials each, then summarized.
- Mean (Trial averages): 72 beats per minute
- Range: 84 minus 64 = 20 beats per minute
- Claim from the graph: heart rate varied most for Sample D, so I would re-check that person's measurements before trusting them.
My graph has the four samples on the x-axis (labeled 'Sample') and beats per minute on the y-axis (labeled 'Heart rate, bpm'), with a title 'Resting Heart Rate by Sample'. Every axis is labeled and has units, which is the SOP for a trustworthy figure.
| Sample | Trial 1 | Trial 2 | Trial 3 | Average |
|---|---|---|---|---|
| A | 70 | 72 | 71 | 71 |
| B | 65 | 64 | 66 | 65 |
| C | 83 | 84 | 82 | 83 |
| D | 68 | 76 | 72 | 72 |
Also due today: Save the labeled graph image to your notebook and write one sentence stating the mean and range in words.
WebXam problem for today's skill
One exam-style question that uses exactly what you practiced today. Try it before you reveal the answer, then read why each choice is right or wrong.
Tap an answer to see the full explanation. Nothing is recorded or graded.