Collection of Data

These flashcards are based on Collection of Data, Chapter 2 of the NCERT textbook Statistics for Economics for Class 11 Economics. The chapter explains the meaning and purpose of data collection, sources of data, primary data, secondary data, surveys, questionnaires, census, sample surveys, sampling methods, sampling errors, and important statistical agencies such as the Census of India and National Sample Survey (NSS). The flashcards help students understand the fundamental concepts used in statistical investigations and economic research.
 

The flashcards use an interactive learning format that allows students to revise important definitions, concepts, survey methods, sampling techniques, and data collection procedures. Learners can study the differences between census and sample surveys, understand questionnaire design principles, explore random and non-random sampling methods, and learn how data is collected and used in economics. The format is suitable for self-learning, chapter revision, and examination preparation with a beginner to intermediate difficulty level.
 

By using these flashcards, students can improve their Data Collection Skill, Research Skill, Statistical Thinking Skill, Analytical Thinking Skill, Sampling Skill, and Data Interpretation Skill. Learners gain practical knowledge of survey techniques, population and sample selection, error identification, and statistical data sources. These NCERT Class 11 Economics flashcards support chapter revision, Collection of Data concepts, sampling methods, survey techniques, primary and secondary data, and economic data analysis topics frequently searched by students.