- Data are numerical facts or measurements collected from the real world. A single measurement is called a datum.
- Raw data alone may not give clear meaning; it must be analysed and organised to derive useful information.
- Data is important in geography to study patterns like population, rainfall, crop production, migration and city growth.
- Proper statistical analysis and presentation of data is necessary to avoid wrong conclusions (statistical fallacy).
- Modern geographical studies focus more on quantitative analysis using data to explain relationships between different variables clearly and logically.
Topics
Human Geography - Nature and Scope
- Introduction to Human Geography
- Nature of Human Geography
- Fields and Sub-fields of Human Geography
- Overview of Human Geography - Nature and Scope
Unit I
Data – Its Source and Compilation
- What is Data?
- Need of Data
- Presentation of Data
- Sources of Data
- Sources of Data - Primary
- Sources of Data - Secondary
- Tabulation and Classification of Data
- Data Compilation and Presentation
- Processing of Data
- Grouping of Data
- Process of Classification
- Overview of Data – Its Source and Compilation
Population Distribution, Density, Growth and Composition
Human Settlements
The World Population Density, Distribution and Growth
- Population Distribution in the World
- Density of Population
- Factors Influencing the Distribution of the Population
- Population Growth and Growth Measures
- Components of Population Change
- Demographic Transition
- Population Control Measures
Unit II
Data Processing
- Mode
- Comparison of Mean, Median and Mode
- Methods of Measuring Dispersion
- Rank Correlation
- Direction of Correlation
- Method of Calculating Correlation
- Degree of Correlation
- Overview of Data Processing
Human Development
- Growth and Development
- Concept of Human Development
- Approaches of Human Development
- Measuring Human Development
- International Comparisons of Human Development
Unit III
Land Resources and Agriculture
Graphical Representation of Data
- General Rules for Drawing Graphs, Diagram and Maps
- Construction of Diagrams
- Classification of Thematic Maps Based on Method of Construction
- Overview of Graphical Representation of Data
Water Resources
Spatial Information Technology
- Spatial Information Technology
- Geographical Information System (GIS)
- Advantage of GIS Over Manual Methods
- Components of GIS
- Spatial Data Formats
- Sequences of GIS Activities
- Overview of Spatial Information Technology
Primary Activities
- Hunting and Gathering
- Pastoralism
- Agricultural Systems
- Mining
Map Work (Based on identification of features on World Political Map)
Unit I
Mineral and Energy Resources
Secondary Activities
Tertiary and Quaternary Activities
Unit II
Planning and Sustainable Development in Indian Context
Transport, Communication and Trade
Unit III
Transport and Communication
International Trade
International Trade
Unit IV
Unit V
Geographical Perspective on Selected Issues and Problems
Map Work (Based on locating and labelling on a political map of India)
Geography Practical II
Practical Record Book and Viva Voce
Estimated time: 12 minutes
CBSE: Class 12
Key Points: Data and Its Importance in Geography
CBSE: Class 12
Key Points: Sources of Primary Data
- Data is collected from two sources: Primary sources and Secondary sources.
- Primary data is collected first-hand by a person or organisation for the first time, while secondary data is taken from already published or unpublished records.
- One important source of primary data is personal observation, where information is collected directly through field surveys.
- Interviews are used to collect direct information through conversation, and questions should be simple, polite and unbiased.
- Questionnaires and schedules help collect data from large areas; in questionnaires respondents fill answers themselves, while in schedules an enumerator fills it, making it useful even for illiterate people.
CBSE: Class 12
Key Points: Secondary Sources of Data
- Secondary data is data already collected by others and available in published or unpublished records.
- Government publications are the main sources, e.g. Census of India, NSS reports, IMD weather reports, statistical abstracts, commission reports.
- Semi-government and international sources include reports from Municipal Corporations, Urban Development Authorities, and UN agencies like UNESCO, UNDP, WHO, FAO (e.g. Human Development Report).
- Private sources include yearbooks, surveys, research reports published by private organisations, along with newspapers and magazines.
- Unpublished sources include village revenue records (patwari), municipal plans, government documents, and records of companies, trade unions, political organisations, and welfare associations.
CBSE: Class 12
Key Points: Tabulation and Classification of Data
- Raw data is unorganised information. To make it meaningful, it must be classified and tabulated.
- A statistical table arranges data in rows and columns, making it easy to understand, compare and save space.
- Data can be presented in three forms:
Absolute values (original numbers), Percentages/Ratios, and Index numbers. - Index number shows change over time or place.
Base year is usually taken as 100 and other years are compared with it. - Grouping of data means dividing raw data into classes (like 0–10, 10–20, etc.) to reduce volume and simplify study.
- Classification is done using tally marks (Four and Cross method), and the final result is shown as a frequency distribution table.
- Frequencies are of two types:
Simple frequency (f) = number of observations in a class,
Cumulative frequency (Cf) = total frequency up to that class (helps in “less than” or “more than” comparisons).
