After Defining the Variables Involved in a Study,scientists Have to Identify

question 7

Essay

After defining the variables involved in a study,scientists have to identify individuals to study.The population is the group of individuals to whom we hope our conclusions will apply.Researchers generally hope that their conclusions will apply to a large population,such as all 20-year-olds in the country.Because it is not practical to examine everyone in the population,researchers study a sample of people and assume that the results for the sample apply to the whole population.Briefly define the following types of samples: convenience sample,representative sample,random sample,and cross-cultural sample.​

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Definitions:

Cervix

The lower, narrow part of the uterus that connects to the vagina, playing key roles in childbirth and menstrual flow.

Acrosome

A cap-like structure over the anterior portion of a sperm's head, facilitating the sperm's penetration of the egg.

Enzymes

Organic compounds that markedly increase the speed of nearly all cellular chemical processes.

Zona Pellucida

A thick, glycoprotein layer surrounding the plasma membrane of an oocyte, important for fertilization in mammals.