Class 11 Economics - MAHARASHTRA
Collection of Data
The chapter 'Collection of Data' in Class 11 Economics introduces students to the foundational steps of statistical analysis as prescribed by the Maharashtra State Board (MSBSHSE). It covers the primary and secondary sources of data, detailing methods of data collection such as personal interviews, mailed questionnaires, and observation. Students will learn the distinction between a census and a sample survey, along with essential sampling techniques like random and non-random sampling. Understanding this chapter is crucial for board exams as it forms the practical basis of economic research, carrying significant weightage in objective and descriptive questions.
Start Learning FreeKey Concepts
Primary Data
Data collected for the first time directly by the investigator for a specific purpose, making it original and first-hand.
Secondary Data
Data that has already been collected, processed, and published by someone else, such as government reports or textbooks.
Census Method
A method of statistical enquiry where data is collected from each and every unit of the population or universe.
Sample Survey Method
A method where data is collected from a representative part (sample) of the population to draw conclusions about the whole.
Random Sampling
A sampling technique where every unit of the population has an equal and independent chance of being selected.
Important Formulas
Board Exam Info
Under the Maharashtra (MSBSHSE) Class 11 Economics curriculum, this chapter typically carries around 6 to 8 marks. Common question types include distinguishing between primary and secondary data, explaining methods of data collection, and short notes on sampling techniques.
Frequently Asked Questions
What is the main difference between primary data and secondary data?
Primary data is collected first-hand by the researcher for a specific study, whereas secondary data is already collected and published by someone else.
When should a researcher use the census method instead of the sample method?
The census method is used when the population size is small, high accuracy is required, and units possess diverse characteristics.
Why is sampling preferred over the census method in most economic studies?
Sampling saves time, money, and effort because data is collected from only a small representative portion instead of the entire population.
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