Class 11 Economics - KARNATAKA
Collection of Data
The chapter Collection of Data in Class 11 Economics introduces students to the foundational steps of statistical enquiry. It covers the two primary sources of data: primary data, which is collected firsthand by the investigator, and secondary data, which is obtained from already published or unpublished sources. Students learn various methods of data collection such as personal interviews, mailing questionnaires, and telephonic interviews, along with important sampling techniques like random and non-random sampling. Understanding these concepts is crucial for board exams as it forms the basis of practical economic analysis, questionnaire designing, and handling large sets of statistical information.
Start Learning FreeKey Concepts
Primary Data
Data collected for the first time by the investigator for a specific research purpose, making it original and firsthand.
Secondary Data
Data that has already been collected, processed, and published by someone else, such as government reports or academic journals.
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 segment of the population to draw conclusions about the whole group.
Random Sampling
A sampling technique where every individual unit in the population has an equal and independent chance of being selected.
Important Formulas
Board Exam Info
In the Karnataka (KSEEB) Class 11 Economics board examinations, this chapter typically carries around 6 to 8 marks. Questions usually include 1-mark multiple-choice questions, 2-mark definitions, and 5-mark descriptive questions comparing primary and secondary data, census versus sampling methods, or merits and demerits of random sampling.
Frequently Asked Questions
What is the main difference between primary data and secondary data?
Primary data is original and collected firsthand by the investigator for a specific study, whereas secondary data is already collected and published by someone else for a different purpose.
Why is the sampling method preferred over the census method in large studies?
The sampling method is more economical, saves time, requires less labor, and is often more accurate when dealing with a very large population.
What are the essential qualities of a good questionnaire?
A good questionnaire should have a limited number of questions, clear and simple language, logical sequencing, and avoid personal or ambiguous questions.
Learn Collection of Data with Your AI Tutor
10 different ways to study this chapter. Free for 3 chapters per day.
Lecture
Key Points
Interactive
Quiz
Flashcards