第 5 个问题A data analyst at an energy utility wants to study the opinions of all adults in Portugal about green energy. Because It would be impractical to collect data from every single person in the country, the data analyst studies a part of the population that is representative of the whole. What does this scenario describe? 1 分Choosing quantitative dataUsing a sampleUsing a populationChoosing a data type

A political scientist needs to poll all voters in Seoul, South Korea, in order to predict the outcome of an election. Because it would be impossible to collect data from every single person in the city, the political scientist polls a part of the population that is representative of the whole. What does this scenario describe? 1 分Choosing a data typeChoosing quantitative dataUsing a sampleUsing a population

In data analytics, what term refers to all possible data values in a dataset?1 分SamplePopulationRepresentationSource

第 24 个问题A representative sample1 分consists of one person with every important characteristic in the population.is identical in size to the population.reflects the characteristics of the population in the same proportion as in the population.represents one important characteristic of the population.

A researcher asks 250 students (from a school with 1000 pupils) to complete a survey about the cafereria. The 250 students are a:a. populationb. case studyc. sampled. variable

A student collects information about the number of school going children in a locality consisting of a hundred households. The data collected by him isArrayed dataGrouped dataPrimary dataSecondary data