Step - 7 Collecting Data

Duration: 4 min

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Inside: a video lesson and guided study material.

Module outline

Paper-I | Mathematical Abilities: Ratio and Proportion (Ratios), Divisibility Rules, Data Interpretation, Mixture and Alligation, Number System, Speed Time and Distance, Arithmetic, Percentage, Average, Simple Interest and Compound Interest, Profit and Loss, Partnership, Time and Work, Algebra, Mensuration and Geometry, Trigonometry, Linear Algebra
Paper-I | Reasoning & General Intelligence: Series (Number and Letter Series) (Numerical Relations and Reasoning), Coding Decoding, Data Sufficiency, Non Verbal Reasoning (Spatial Aptitude) (Spatial Reasoning) (Visual Reasoning), Syllogisms, Deductive and Inductive Reasoning (Logical Deduction and Induction) (Prepositional Reasoning), Seating Arrangements, Blood Relations, Directions (Direction Test), Analytical Reasoning (Counting Figures Reasoning), Puzzle Solving (Puzzles), Calendar, Clock, Cubes & Dices, Selection Decision Table (Decision Making), Logical Sequence Of Words, Crypt Arithmetic, Venn Diagram, Data Arrangement, Inequality, Analogy, Ranking, Order and Sequence, Clerical Aptitude, Verbal Classification
Paper-I | English Language & Comprehension: Vocabulary, Noun, Subject Verb Agreement (Verb Noun Agreement), Adjectives, Tenses, Pronoun, Preposition, Articles, Direct and Indirect Speech, Conjunction, Modals, Sentence Re-arrangements (Para Jumbles) (Narrative Sequencing), Sentence Correction (Error Correction), Sentence Completion (Fill in the blanks), Comprehension / Reading Comprehension / Unseen Passages (Critical Reasoning) (Paragraph Questions), Cloze Test (Cloze Passage), Verbal Analogy (Word Based Analogy), Sentence Construction, Active Passive Voice (Voice), Determiner, Facts, Inference and Judgements
Paper-I | General Awareness: Polity, Physics, Biology, Chemistry, Environment, GK- Current Affairs, Static General Knowledge, History, Geography, Indian Economy
Paper-I | Computer Knowledge/Proficiency): Basics of COA, Transport Layer Services, Keyboard Shortcuts, MS Office Applications, MS Office by Yash Sir, Emerging Tech Trends, Society, Law & Ethics, Website, Browser & Services, Internet Fundamentals, Web Design & Development, Introduction to CN, Hardware basics, Network Security, Application Layer, Cyber and Info Security, Cyber Threats and Malware Attacks, Cyber Safety and Security, Role of Internet and Web Services, Security in Mobile and Wireless Computing
Paper-II | Statistics: Statistics, Probability, Research Process Steps

AI summary & chapters

AI Summary

An AI-generated summary of this video lecture.

This educational video presents a lecture on the two main types of data used in research: primary and secondary data. The first part of the video, under the heading 'Step 7 Collecting Data', defines primary data as information collected directly by researchers from original sources for a specific study. It provides an example of researchers studying the impact of exercise on mental health by designing and distributing a survey to college students. The second part, titled 'Secondary Data', defines this type of data as information that has already been collected and published by others. It is described as more cost-effective and time-efficient because it is readily accessible, but it may not perfectly align with the current research's needs and can be outdated or less reliable. The video uses a clear, structured format with on-screen text to explain these concepts.

Chapters

0:00 – 2:00 00:00-02:00
The video begins with a slide titled 'Step 7 Collecting Data'. It explains that data collection involves gathering information from sources like surveys, interviews, and experiments. The first topic, 'Primary Data', is introduced. The text defines primary data as information collected directly by researchers from original sources for a specific research study. It states that this data has not been previously collected or analyzed by others. The slide lists methods for gathering primary data, including surveys, interviews, observations, experiments, and focus groups. An example is provided: researchers studying the impact of exercise on mental health among college students design a questionnaire to collect data on exercise habits and mental health status, which is considered primary data because it is collected firsthand for their study.
2:00 – 3:39 02:00-03:39
The video transitions to a new slide titled 'Secondary Data'. The text defines secondary data as information that has already been collected and published by someone else for a different purpose. It uses the analogy of using a recipe from a cookbook instead of creating one from scratch. The slide lists external sources for secondary data, such as television, radio, magazines, books, and newspapers. It also mentions that researchers can gather secondary data from online surveys conducted by market research firms or social media analytics reports. The text highlights that secondary data is more cost-effective and time-efficient because it is readily accessible and does not require the researcher to undertake the data collection process. However, it also notes a key disadvantage: secondary data may not perfectly align with the specific needs of the current research and can sometimes be outdated or less reliable, as the researcher has no control over the original data collection process.

The video provides a clear and structured comparison between primary and secondary data. It establishes that primary data is original, collected firsthand for a specific research question, and is often resource-intensive. In contrast, secondary data is pre-existing, readily available, and more efficient to use, but it comes with the trade-off of potential lack of relevance and reliability. The lecture progresses logically from defining the first concept to the second, using a consistent example and clear on-screen text to reinforce the key differences.