Representation of Data| Practical Work in Geography Class 12

In this article, we will delve deep into the ” Representation of Data” which is Chapter 3 of the NCERT Class 12 Practical Work Geography book. These notes are specially curated by an expert team at GeeksforGeeks for all the students.

Let’s get started!

Representation of Data

When we talk about showing information, we can do it in different ways like writing, tables, diagrams, or pictures. Among these, diagrams and graphs are good at making things easy to understand. They’re especially useful for analyzing numbers and making conclusions. Most people find data boring, but when we present it using diagrams and graphs, it becomes more interesting and impressive.

When we change data into pictures, like graphs, charts, or maps, it’s called representing data. When data is well-organized and shown this way, we can compare it easily and get important information from it.

Today, many professionals like geographers, economists, and decision-makers use a lot of data. They not only put data in tables but also show it using pictures and diagrams.

There’s a saying that goes, “A picture is worth a thousand words.” This means pictures help us understand things better and make comparisons easier. In geography, we use pictures to study things like how populations grow, where they live, how old they are, and what jobs they have.

When we draw graphs, maps, or diagrams, there are some important things to remember:

• We need to choose the right way to show the data.
• We must use the right scale so everything fits correctly.
• We should design our graphs and maps nicely, with titles, legends, and directions.

There are different types of diagrams and maps we use:

• One-dimensional ones, like line graphs and bar charts.
• Two-dimensional ones, like pie charts.
• Three-dimensional ones, like cubes and spheres.

Some commonly used diagrams and maps include:

• Line graphs, which show how things change over time.
• Bar charts, which compare different things.
• Pie charts, which show parts of a whole.
• Wind roses and star diagrams, which show patterns in data flow.
• Flow charts, which show steps in a process.

Maps, graphs, and diagrams help us compare different parts of the data. They make it easier to understand the differences and similarities between them.

Representation of Data: Important Terms

• Title: This tells us what the diagram or map is about.
• Legend: This explains what the colors, symbols, or signs mean.
• Line Graph: A graph that shows how something changes over time.
• Multiple Bar Diagram: A graph that compares two or more things.
• Compound Bar Diagram: A graph that groups different things together for comparison.
• Quantitative Maps: Maps that show measurable things like rainfall amounts.
• Qualitative Maps: Maps that show non-measurable things like areas with high or low rainfall.
• Dot Maps: Maps that use dots to show where things are located.
• Choropleth Map: Maps that use shading or coloring to show data about different areas.
• Isopleth Map: Maps that use lines to connect places with the same value, like lines showing equal temperature or rainfall.

Conclusion – Practical Work in Geography Class 12 Representation of Data

In this article, we’re diving into the topic of “Representation of Data” from the NCERT Class 12 Practical Work Geography book. These notes are put together by the experts at GeeksforGeeks to help students understand how data can be shown visually. When we want to share information, we have different ways to do it, like writing, using tables, or making diagrams and graphs. Among these, diagrams and graphs are great because they make it easier to understand complex information. They’re especially handy for analyzing numbers and drawing conclusions. Professionals like geographers, economists, and decision-makers use a lot of data. They not only organize data in tables but also use pictures and diagrams to show it in a clearer way.

FAQs on Practical Work in Geography Class 12 Representation of Data

What is representation of data in geography practical class 12?

The transformation of data through visual methods like graphs, diagrams, maps and charts is called representation of data. Such a form of the presentation of data makes it easy to understand the patterns of population growth, distribution and the density, sex ratio, age–sex composition, occupational structure, etc.

How do you represent data in geography?

We can represent data in Geography with the help of:

1. Line graphs – simple and comparative line graph ( simple line graph only for N level)
2. Bar graphs – simple and comparative bar graph (simple bar graph only for N level)
3. Bi-polar graphs.
4. Pie charts.
5. Scattergraphs with lines of best fit.
6. Climographs.
7. Flow line and Desire line graphs.

What is the need of data Class 12 geography practical?

Data related to the total population, density, number of migrants, occupation of people, their salaries, industries, means of transportation and communication is needed to study the growth of a city. 

What are the methods of geographic data representation?

Two methods of representing geographic data in digital form are raster and vector. In principle, both can be used to code fields and discrete objects, but in practice there is a strong association between raster and fields and between vector and discrete objects.

What are the two kinds of geographic representation?

A geographic field can be represented by means of a tessellation, a TIN or a vector representation. The choice between them is determined by the requirements of the application in mind. It is more common to use tessellations, notably rasters, for field representation, but vector representations are in use too.