A graph showing two sets of data simultaneously is known as

Options

A. Pictograph
B. Histogram
C. Pie chart
D. Double bar graph

Answer

To solve the question, "A graph showing two sets of data simultaneously is known as," we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: The question asks for the name of a graph that can display two sets of data at the same time.

2. **Identify Graph Types**: We need to consider different types of graphs that can represent data:
- **Pictograph**: Represents one set of data using pictures or symbols.
- **Histogram**: Used for one set of data, showing frequency distribution.
- **Pie Chart**: Represents one set of data in a circular format.
- **Bar Graph**: Can represent one set of data, but there are variations.

3. **Consider Double Bar Graph**: A double bar graph (or double bar chart) is specifically designed to show two sets of data side by side. Each set of data is represented by a different color or pattern of bars.

4. **Conclusion**: Since the question specifies that we need a graph that shows two sets of data simultaneously, the correct answer is a **Double Bar Graph**.

### Final Answer:
A graph showing two sets of data simultaneously is known as a **Double Bar Graph**.

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