Introduction

Charts are an essential tool for any area involving data presentation. Whether in the business, academic, or even in our daily activities, the correct use of charts facilitates the understanding and analysis of quantitative information.

Charts allow us to visualize the relationship between variables, identify trends, compare data, and often make decisions based on this visual presentation. One of the essential skills in mathematics, especially in statistics, is the ability to understand, interpret, and create appropriate charts for different data sets.

There are various types of charts, each with its characteristics and applicabilities. Among the most well-known are column charts, line charts, pie charts, scatter plots, among others. Each of these charts is suitable for a specific type of data and situation, and knowing how to choose the correct chart is a valuable skill.

Contextualization

Charts play a crucial role in various aspects of modern society. Whether in sciences, business, economics, medicine, meteorology, sports, politics, and many other fields, charts are present. They help us better understand phenomena and their relationships, allow us to compare different scenarios, and support strategic decision-making.

In the corporate world, for example, charts are used to analyze trends, make predictions, compare the performance of different products or teams, among others. In science, charts are fundamental in presenting research results, allowing a clear visualization of the conclusions reached. In the health context, charts are used to visualize patient information, examination analyses, and epidemiological data.

Practical Activity

Activity Title:

"Analysis of Charts in the Real World"

Project Objective:

To present, in a practical and applicable way, the importance and use of charts in data analysis in the real context, reinforcing the understanding of the types of charts and when each should be used.

Detailed Project Description:

Students, divided into groups of 3 to 5 members, should choose, analyze, and recreate charts found in media such as newspapers, magazines, and news websites. Each group should choose three different charts from different media.

The chosen charts should be of different types (column, pie, line, etc.) and should be recreated by the students using spreadsheets, such as Excel or Google Sheets.

After recreating the charts, students should conduct a critical analysis of the charts, answering questions such as: Was the chart an appropriate choice for the data presented? If not, what type of chart would be more suitable and why? Was there any issue in the data presentation on the chart? How could this issue be resolved?

Required Materials:

• Computer with internet access
• Chart creation program (Microsoft Excel or Google Sheets)

Detailed Step-by-Step:

1. Form groups of 3 to 5 students.
2. Each group should research and choose three charts from different media. The charts should be of different types.
3. Students should recreate the chosen charts using a spreadsheet.
4. Conduct a critical analysis of the chosen charts.
5. Write a report with the analysis of the recreated charts.
6. Present the work to the class.

Project Deliverables:

Students should deliver the project in two parts:

1. Recreated Charts: The recreated charts should be delivered in a spreadsheet file. Each chart should be on a separate sheet of the spreadsheet, with the title and the source of the original chart.

2. Report: The report should follow the following structure:

   • Introduction: Contextualization of the theme, explaining the importance of charts in the real world and the project's objective.
   • Development: The theory behind the choice and construction of the charts, a detailed description of the activity carried out, the methodology used for the choice, recreation, and analysis of the charts, and the discussion of the results obtained.
   • Conclusions: Recap of the main points addressed throughout the project, explicitation of the learnings acquired, observations, and conclusions about the choice and use of charts in the real world.
   • Bibliography: Indication of the sources where the original charts were found and other sources used to understand the necessary concepts for the project.