Class 11 Economics - UP
Collection of Data
The chapter 'Collection of Data' in Class 11 Economics introduces students to the foundational steps of statistical enquiry. It covers the primary and secondary sources of data, methods of collecting data such as interviews and questionnaires, and the distinction between a census and a sample survey. Understanding this chapter is crucial for UPMSP board examinations as it forms the basis of statistical analysis. Students learn how to gather reliable information, design effective questionnaires, and choose appropriate sampling techniques, which are essential skills for practical economic research and scoring high marks in the exams.
Start Learning FreeKey Concepts
Primary Data
Data collected for the first time by the investigator himself for a specific purpose, making it original in character.
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 data is collected from every single unit of the entire population or universe.
Sampling Method
A method where data is collected from a small representative group (sample) chosen from the population to save time and cost.
Pilot Survey
A small-scale preliminary test of the questionnaire conducted before the main survey to check for errors and flaws.
Important Formulas
Board Exam Info
In the Uttar Pradesh (UPMSP) Class 11 Economics board exams, this chapter generally carries around 6 to 8 marks. Common question types include short answer questions differentiating between primary and secondary data, very short questions on sampling methods, and long-answer questions explaining the essentials of a good questionnaire.
Frequently Asked Questions
What is the main difference between primary and secondary data?
Primary data is collected firsthand by the investigator for a specific study, whereas secondary data is pre-existing data collected by someone else previously.
When is the census method preferred over the sampling method?
The census method is preferred when the population size is small, high accuracy is required, and units possess diverse characteristics.
Why is a pilot survey necessary?
A pilot survey helps identify shortcomings, ambiguous questions, and practical difficulties in the questionnaire before conducting the actual large-scale survey.
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