5. NCERT Questions (With Hints to Answers)
1. State whether the following statements are true or false:
(1) There are many sources of data.
(il) Telephone survey is the most suitable method of collecting data, when the population is lite
and spread over a large area.
(iii) Data collected by investigator is called the secondary data.
[(True, (ii) True, (iii) False)
Answers
Answer:
1. true
2.true
3. false
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Explanation:
Define primary data.
Answer: Primary data is the collection of data collected by the investigator for his purpose for the first time. These are collected from the source of origin.
Question 2
Define secondary data.
Answer: According to Wessel, “Data collected by a person is known as secondary data”. It is known as secondary data as it has already been collected by somebody else. These data are accessible in the form of a published and unpublished report.
Question 3
What are the two sources of data?
Answer: The two sources of data are.
Primary source
Secondary source
Question 4
Mention two sources of secondary data.
Answer: The two sources of secondary data are.
Government publication
Semi-government publication
Question 5
In what parameter is statistical information published in the census of India.
Answer: The parameter is statistical information published in the census of India are.
Population projection
Sex composition of a population
Density of population
Size, growth rate, and distribution of people in India
Question 6
Mention two demerits of Indirect oral investigation.
Answer: The two demerits of Indirect oral investigation are.
Less Accurate
Biased
Doubtful Conclusion
Question 7
The progress report of a railway published by the railway department is what kind of data?
Answer: The progress report of a railway published by the railway department is secondary data.
Question 8
When is a direct personal investigation suitable for primary data collection?
Answer: The direct personal investigation method is suitable for collecting primary data only on the situation when
The investigation is confined and less
Authentic and accurate information is required
The data is to be kept secret
Direct contact with information is needed
Question 9
When are the qualities of a good questionnaire?
Answer: A good questionnaire should have.
Less number of question
Should be clear
Proper order of question
Non-controversial
Question-related to the topic
Request for return
Question 10
Why is a pilot survey important?
Answer: A pilot survey is essential because
It helps in assessing the quality and suitability of question
It evaluates the performance of enumerators
It helps in designing a set of rules for the investigator
It estimates the time and cost involved in the final survey