https://r2.erweima.ai/mathbot/image/1726913507658nx0h04ze.jpg

I can help extract and analyze the content from the image you provided. It seems to include a graph and several questions written in Chinese. The questions relate to the presence of various symptoms (发热 - fever, 头痛 - headache, 病徵 - symptoms) and include a graph for disease A, B, and C with different rates of symptoms.

From the visible section of the problem:

### Question 15:
The question asks about the total number of patients showing signs of coughing (病徵 - symptoms). It lists four choices:
- A. 244
- B. 248
- C. 250
- D. 276

It seems like the question requires interpreting data from the graph, which plots symptom occurrence across different diseases (A, B, and C). This may involve calculating or summing certain values related to "咳嗽" (cough) or similar symptoms.

### Question 16:
The question asks about patients who are infected with disease A, and specifically those with no symptoms:
- A. 10
- B. 30
- C. 50
- D. There's no clear decision because of a correlation between fever and headache.

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I can help further if you need me to perform calculations based on the graph or explain specific details. Would you like a detailed breakdown of the graph data or solutions to these questions?

Feel free to ask for further clarifications!

Here are five relevant questions for further exploration:
1. How is the total number of patients distributed among diseases A, B, and C?
2. What is the relationship between fever and headache in terms of the symptoms exhibited?
3. How does the occurrence of symptoms vary between diseases A, B, and C?
4. What calculation methods can be used to interpret graph data for multiple symptoms?
5. How are patients grouped based on symptoms when no symptoms are present?

**Tip**: When interpreting graphs with multiple variables, pay close attention to the legend and axis labels to ensure correct data extraction.

What is the total number of patients showing signs of coughing?

This page helps interpret a graph showing the distribution of symptoms like fever, headache, and coughing across three diseases. It involves calculating the total number of patients with symptoms using graph data.

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