Jordan compared 10 books at the school library. The following table shows the number of chapters and the total number of pages for each book.

\begin{tabular}{|c|c|c|c|c|c|c|c|c|c|c|}
\hline Number of Chapters & 3 & 4 & 5 & 8 & 10 & 12 & 13 & 14 & 16 & 20 \\
\hline Total Pages & 18 & 38 & 45 & 85 & 76 & 145 & 138 & 160 & 180 & 220 \\
\hline
\end{tabular}

Which of the following representations is most appropriate to show the relationship between the number of chapters and the total pages of a book?

A. Line graph
B. Bar chart
C. Pie chart
D. Histogram



Answer :

To determine the most appropriate representation to show the relationship between the number of chapters and the total number of pages of a book, let's consider the type of data we have and the best way to visualize it.

### Understanding the Data
We have two sets of data:
1. The number of chapters in each book.
2. The total number of pages in each book.

These data sets can be viewed as pairs: (Number of Chapters, Total Pages).
For example:
- (3 chapters, 18 pages)
- (4 chapters, 38 pages)
- ...

### Purpose of Visualization
We want to see if there is a correlation or relationship between the number of chapters and the total number of pages. For this purpose, graphing each pair of data points on a coordinate plane can be very illustrative.

### Suitable Representation
The most common and effective way to represent such pairs of data and observe any possible relationship is by using a scatter plot. A scatter plot allows us to see how two variables are related and whether any patterns emerge from the data.

### Why a Scatter Plot?
- Visual Clarity: A scatter plot will plot each book as a point on the graph, with the x-coordinate representing the number of chapters and the y-coordinate representing the total number of pages.
- Correlation: By plotting the points, we can observe if there is a trend such as a positive correlation (where the number of pages increases with the number of chapters) or a negative correlation (where the number of pages decreases as the number of chapters increases).
- Outliers: It also helps in identifying any outliers or books that do not follow the observed trend.

### Conclusion
Given the data and the goal of showing the relationship between the number of chapters and the total number of pages, the most appropriate representation is:

A Scatter Plot.

This will adequately demonstrate the relationship between the two variables and allow for easy analysis of the data.