Examlex
Stratified samples are most appropriate when the population is known to be "skewed."
Menstruation
The monthly discharge of blood and mucosal tissue from the inner lining of the uterus through the vagina, part of the female reproductive cycle.
Menarche
The occurrence of the first menstrual period in females.
Cell Phone
A portable telephone that can make and receive calls over a radio frequency link while the user is moving within a telephone service area.
Primary Sex Characteristics
the main organs directly involved in reproduction, including the ovaries in females and the testes in males.
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