Statistics Homework Essay

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제2장 자료와 수집 CHAPTER 2: DATA COLLECTION 1. 자료는 형태에 따라 다음과 같이 나뉜다. 각 용어등을 정의하고 용어와 관련된 현 실적인 예롤 제시하라. 1) 질적자료 2) 양적자료 3) 순서자료 According to form, the data is divided as follow. Define these terminologies and provide practical example: 1) Qualitative data 2) Quantitative data 3) Ordinal data Answer: 1) Qualitative data - Information about qualities; - Data that can be observed but not measured; 2) Quantitative data - Information about quantities; - Data that can be measured and written down in numbers; Example: The weather today is sunny but cold, with the temperature being 10oC. * Qualitative data: the weather (sunny, cold) * Quantitative data: the temperature (10oC) 3) Ordinal data - A statistical data type consisting of numerical scores that exist on an ordinal scale; - Often be seen in questionnaires; Example: In the survey made by a restaurant, there is a question: "How satisfied are you with our services?" 1 - Very unsatisfied 2 - Somewhat unsatisfied 3 - Neutral 4 - Somewhat satisfied 5 - Very satisfied 2. 자료는 관측 방법에 따라 다음과 같이 나뉜다. 각 용어를 정의해!! 용어와 관련된 현실적인 예를 제시하라. 1) 횡단면자료 2) 시계열자료 3) 종적자료 4) 패널 According to observation method, the data is divided as follow. Define each terminology and provide relevant example: 1) Cross-sectional data 2) Time-series data 3) Longitudinal data 4) Panel data Answer: 1) Cross-sectional data - A type of data collected by observing many subjects (such as individuals, organizations, countries, etc.) at the same point of time, or without regard of differences in time. - Example: According to the Census results, on 01 April, 2009, Vietnam had 22,628 thousand households, with the population size being as follow: POPULATION SIZE BY SEX, URBAN/RURAL RESIDENCE AND SOCIO-ECONOMIC REGION, 2009 Unit: Persons Socio-economic region | Total | Male | Female |
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