Collection of Data — Flashcards
Gujarat Board · Class 11 · Statistics
25 flashcards for Collection of Data (Gujarat Board Class 11 Statistics) to test yourself on key terms and facts.
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Who first used the German word 'Statistik' and when?
Answer
Gottfried Achenwall first used the German word 'Statistik' in 1749 for analysis of data about the state. Statistics was formally introduced in Encyclopedia Britannica in 1797.
Who is known as the 'Father of Statistics' and why?
Answer
R.A. Fisher is known as the 'Father of Statistics' because he applied statistics to diverse fields like genetics, biometry, psychology, education, and agriculture, and developed modern statistical met…
What is the role of P.C. Mahalanobis in Indian Statistics?
Answer
P.C. Mahalanobis founded the Indian Statistical Institute (ISI) in 1931 at Calcutta, started the first post-graduate course in Statistics at Calcutta University in 1941, and formulated India's second …
Define Population and Sample with an example.
Answer
Population: A group of all units under study. Sample: A set of units selected from the population. Example: If studying 700 workers in a factory, all 700 workers form the population (N=700). If we sel…
What is the difference between Qualitative and Quantitative Data?
Answer
Qualitative Data: Non-numerical characteristics that can be observed but not measured on a scale (e.g., gender, education level, religion). Quantitative Data: Numerical characteristics that can be mea…
Define Primary Data with examples.
Answer
Primary Data: Data originally collected by an authorized agency or investigator for the first time. Examples: Data collected by NSSO, population census of India, birth and death rates published by Reg…
Define Secondary Data with examples.
Answer
Secondary Data: Data already collected by one agency but used by another investigator. Example: Birth and death rate data published by Registrar General of India becomes secondary data when used by UN…
List five key differences between Primary and Secondary Data.
Answer
1) Primary is original, secondary is reused 2) Primary collected from units under inquiry, secondary obtained from primary data 3) Primary usually raw, secondary usually classified 4) Primary requires…
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