A nurse measured the blood pressure of each person who visited her clinic. Following is a​ relative-frequency histogram for the systolic blood pressure readings for those people aged between 25 and 40 years. The blood pressure readings were given to the nearest whole number. Approximately what percentage of the people aged​ 25-40 had a systolic blood pressure reading between 110 and 119 mm Hg​ inclusive?
Systolic Blood Pressure for People Aged​ 25-40 Years

To solve this, we need to extract the necessary information from the **relative-frequency histogram** for systolic blood pressure readings. Based on the description, the goal is to determine the approximate percentage of people aged 25–40 who had a systolic blood pressure between **110 and 119 mm Hg inclusive**.

Here’s how we can approach this:

1. **Identify the relative frequency**: On the histogram, locate the bar or range that represents the systolic blood pressure readings from **110 to 119 mm Hg**.
2. **Read the relative frequency**: The height of the bar corresponding to this range tells you the relative frequency, which is usually expressed as a decimal (e.g., 0.2).
3. **Convert to percentage**: To find the percentage of people in this range, multiply the relative frequency by 100. For example, if the relative frequency is 0.2, the percentage would be \(0.2 \times 100 = 20\%\).

Without seeing the actual histogram, I cannot give the precise percentage. But if you have the histogram, follow the above steps to calculate it.

Would you like to upload the histogram image for further assistance or have any other questions?

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Here are 5 related questions to expand on this topic:
1. How do you calculate relative frequency from raw data?
2. What is the difference between a relative frequency and absolute frequency?
3. How is a frequency histogram different from a cumulative frequency histogram?
4. Why is systolic blood pressure an important health indicator?
5. What are the normal ranges for systolic blood pressure for different age groups?

**Tip**: In statistics, converting relative frequencies into percentages makes the data easier to interpret when communicating results.

A nurse measured the blood pressure of each person who visited her clinic. Following is a​ relative-frequency histogram for the systolic blood pressure readings for those people aged between 25 and 40 years. The blood pressure readings were given to the nearest whole number. Approximately what percentage of the people aged​ 25-40 had a systolic blood pressure reading between 110 and 119 mm Hg​ inclusive?

Learn how to calculate the percentage of people aged 25-40 with systolic blood pressure between 110 and 119 mm Hg using relative frequency histograms. This problem covers important statistical concepts such as relative frequency and histogram interpretation. Suitable for Grades 9-12.

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