Class 11 Economics - ODISHA
Collection of Data
The chapter 'Collection of Data' in Class 11 Economics introduces students to the foundational steps of statistical analysis. It covers the primary sources of data collection, such as direct personal investigation and mailing questionnaires, alongside secondary sources like published official reports and websites. Students learn about the Census and Sample methods of data collection, sampling errors, and important survey methods used in India like NSSO and Census of India. Mastering this chapter is crucial for BSE Odisha board exams as it forms the basis of practical statistical problems and theoretical short-answer questions.
Start Learning FreeKey Concepts
Primary Data
Data originally collected for the first time by the investigator from the source of origin for a specific research purpose.
Secondary Data
Data that has already been collected, processed, and published by someone else for some other purpose.
Census Method
A method of statistical enquiry where every single unit of the population or universe is studied.
Sample Method
A method where only a representative group (sample) is selected from the population for study to save time and cost.
Random Sampling
A sampling technique where every item in the universe has an equal and independent chance of being selected.
Important Formulas
Board Exam Info
In the Odisha (BSE) Class 11 Economics board examinations, this chapter typically carries around 6 to 8 marks. Common question types include short-answer questions differentiating between primary and secondary data, merits and demerits of census versus sample methods, and objective multiple-choice questions.
Frequently Asked Questions
What is the main difference between primary and secondary data?
Primary data is first-hand information collected by the investigator, whereas secondary data is already existing data collected by someone else.
When should the census method be preferred over the sample method?
The census method is preferred when the population size is small, units have diverse characteristics, and high accuracy is required.
What are NSSO and Census of India?
They are major agencies in India that collect, process, and publish large-scale secondary data related to population, employment, and socio-economic conditions.
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