Graphing and statistics
Fri, Sep 4, 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.
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 |
This model shows the level of evidence and organization needed to complete: Completes the data-analysis launch task: a clean data table with the mean, range, and a labeled graph of your measurements.
- Name the variables and include units.
- Enter observations without changing the raw values.
- Check labels, calculations, and patterns before interpreting the data.
Keep the structure. Replace the question, facts, measurements, and evidence. Then recheck units, vocabulary, and whether the conclusion goes beyond the evidence.
Also due today: Save the labeled graph image to your notebook and write one sentence stating the mean and range in words.
Claim ceiling: Today's evidence supports a classroom claim about today's lesson. It cannot prove causation, diagnose a real patient, or justify action outside this room.
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.
It builds this reusable test skill: Reading a bar graph and computing range from data.
- Name the concept or data pattern being tested.
- Cross out choices that violate that rule or the evidence.
- Justify the best remaining choice before checking the answer.