3.087 palavras e expressões · 21 temas
sample selected using a chance-based selection procedure
invite and enroll suitable people to take part in a study
producing reasonably consistent measurements when repeated under comparable conditions
reflecting relevant characteristics of the target population
person who provides answers to a survey or study questions
proportion of eligible sampled units providing a response under a stated rule
select units or observations from a population for study
process of selecting units or observations for a study
instrument or ordered set of values used to measure a characteristic
a digit retained in a reported number to communicate the meaningful detail of a measurement or calculation
a numerical value calculated from data to describe a sample or pattern
the procedure, condition, or intervention applied to subjects in an experiment
group assigned to receive the study intervention or condition
a characteristic that can have different values across observations in a study
to become suited to environmental conditions through changes in traits or responses
the process of becoming better suited to the conditions of an environment
an inherited feature that improves survival or reproduction in a particular environment
completing its whole life cycle, from seed to death, within one growing season
living or growing in water, or connected with organisms that do so
reproduction involving one parent and no fusion of sex cells, usually producing genetically similar offspring
a single-celled organism belonging to a group whose cells lack a membrane-enclosed nucleus
to reproduce and produce young animals
the part of the year when a particular animal species normally mates and produces young
an organism's coloring, pattern, or shape that helps it avoid being noticed in its surroundings
an animal that feeds mainly on other animals or their flesh
the process in which a cell splits to produce new cells
the thin, flexible boundary that surrounds a cell and regulates movement of substances into and out of it
a grass grown for its edible grain, such as wheat, rice, or corn
to live or remain present together in the same environment at the same time
an ancestral organism from which two or more different organisms or groups descended