Class 11 Economics - MP
Collection of Data
The chapter Collection of Data in MPBSE Class 11 Economics introduces students to the foundational steps of statistical investigation. It covers the primary and secondary sources of data collection, detailing methods such as personal interviews, mailed questionnaires, and telephonic surveys. Students learn about the importance of sampling techniques like random and non-random sampling, and the errors that can occur during data collection, such as sampling and non-sampling errors. Understanding this chapter is crucial for board exams as it forms the basis of practical statistical analysis and frequently features short-answer and numerical-based conceptual questions.
Start Learning FreeKey Concepts
Primary Data
Data collected for the first time directly by the investigator 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 target population.
Sampling Method
A method where data is collected from a representative small group (sample) chosen from the entire population to save time and cost.
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
In the Madhya Pradesh (MPBSE) Class 11 Economics board exams, this chapter typically carries around 6 to 8 marks. Common question types include short-answer questions differentiating between primary and secondary data, long-answer essay questions explaining methods of collecting primary data, and objective MCQs on sampling techniques.
Frequently Asked Questions
What is the main difference between primary and secondary data?
Primary data is original and collected firsthand by the investigator, whereas secondary data is already published or collected by someone else previously.
Why is the sampling method preferred over the census method?
The sampling method is preferred because it saves time, money, and labor, especially when the population size is very large.
What are sampling errors?
Sampling errors are discrepancies that arise when a sample does not perfectly represent the characteristics of the entire population.
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