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.

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

第 15 个问题A developmental psychology researcher wanted to study sharing among preschool children in her laboratory. When the children entered the lab, however, they were nervous and much more timid than they were at home or in their preschool classroom. In this case, the study’s setting1 分promotes generalizability.low population validityhas high authenticity.has low authenticity.

第 6 个问题Why is random assignment critical in an experimental research design? 1 分It makes the study reliable and valid.It provides evidence that there is a relationship between the measured variables.It ensures that the groups are equal prior to manipulating the independent variable.It allows the results to generalize to the population of interest.

Question 10If you want survey results to be representative of a particular population, it's best to use _______ to make sure that everyone in the population being studied has an equal chance of being included in the research.1 pointrandom assignmentmundane realismdemand characteristicsrandom sampling