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The question in the image asks whether someone's systolic pressure would be above or below average if their diastolic pressure is above average. It also mentions a correlation coefficient \( r \) that is either positive or negative.

Here’s the key to solving this:

- **Systolic pressure** and **diastolic pressure** are related. If there is a **positive correlation** between systolic and diastolic pressures, it means that when one is above average, the other is likely to be above average as well. 
- Conversely, if the correlation \( r \) is **negative**, then if diastolic pressure is above average, the systolic pressure is likely to be below average.

### To summarize:
1. If \( r \) is **positive**, the systolic pressure will likely be **above average**.
2. If \( r \) is **negative**, the systolic pressure will likely be **below average**.

Would you like further details on how correlation works in such medical contexts?

### Related questions:
1. What are systolic and diastolic pressures in blood pressure readings?
2. How does the correlation coefficient work in statistics?
3. What health risks are associated with high systolic and diastolic pressure?
4. Can blood pressure vary significantly throughout the day?
5. How does physical activity affect systolic and diastolic pressure?

**Tip:** Positive correlation means that two variables move in the same direction; negative correlation means they move in opposite directions.

If someone's diastolic pressure is above average, would you expect that person's systolic pressure to be above or below average? Explain.

This problem explores the relationship between diastolic and systolic blood pressure based on whether a positive or negative correlation coefficient exists. Learn how to determine the likely direction of systolic pressure when diastolic pressure is above average. Suitable for high school students (Grades 10-12).

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