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Errors - Collection of Primary and Secondary Data Video Lecture | General Aptitude for GATE - Mechanical Engineering

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03:19 Absolute & Relative Error
04:50 Biased & Unbiased Errors
06:39 Sources of Secondary Data
08:20 Census of India
12:32 National Sample Survey Organization (NSSO)​
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FAQs on Errors - Collection of Primary and Secondary Data Video Lecture - General Aptitude for GATE - Mechanical Engineering

1. What is primary data collection?
Ans. Primary data collection refers to the process of gathering original data directly from the source. This data is collected firsthand by the researcher for a specific purpose, and it can include surveys, interviews, observations, or experiments.
2. What are the advantages of primary data collection?
Ans. Primary data collection offers several advantages. Firstly, it provides accurate and reliable information as it is collected directly from the source. Secondly, it allows researchers to tailor the data collection methods to their specific research objectives. Additionally, primary data collection enables researchers to capture real-time data and adapt their approach if needed.
3. How can secondary data be collected?
Ans. Secondary data refers to data that has already been collected by someone else for a different purpose. It can be collected from various sources such as government publications, research papers, books, or online databases. Researchers can access and analyze this existing data to extract relevant information for their own research.
4. What are the limitations of secondary data collection?
Ans. There are a few limitations of secondary data collection. Firstly, the data might not be tailored to the specific research objectives, leading to potential gaps or inaccuracies. Secondly, the quality of the data might vary depending on the source. Additionally, the availability and accessibility of relevant secondary data can be limited, especially for niche or specialized research topics.
5. What are some examples of primary data collection methods?
Ans. There are various methods to collect primary data. Surveys involve asking questions to a sample of respondents, either through interviews or questionnaires. Interviews allow for more in-depth responses and can be conducted face-to-face or through phone or video calls. Observations involve systematically watching and recording behaviors or events. Experiments involve manipulating variables to study cause-and-effect relationships.
194 videos|168 docs|152 tests

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Video Timeline
Video Timeline
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03:19 Absolute & Relative Error
04:50 Biased & Unbiased Errors
06:39 Sources of Secondary Data
08:20 Census of India
12:32 National Sample Survey Organization (NSSO)​
More
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