Examlex
RR Lyrae stars pulsate, but with shorter periods and lower luminosities than Cepheids.
Between-Groups Design
An experimental design where different groups of participants are exposed to different treatments or conditions and compared.
Random Assignment
The process of allocating participants or units in a study to different groups purely by chance, minimizing pre-existing differences between the groups.
Treatment Conditions
Refers to the specific variables or interventions applied to subjects in an experimental study.
Within-Subjects Design
A research design in which the same group of subjects is exposed to each condition or treatment.
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