Examlex
A convenience sample may also be called a "quota sample."
Actual Average
The true or exact mean calculated from a set of data, as opposed to an estimated or theoretical average.
Rhythm Method
A form of natural family planning based on tracking the menstrual cycle to predict fertile days to avoid or achieve pregnancy.
Birth Control
A method or device used to prevent pregnancy.
Total Fertility Rate
The average number of children that would be born to a woman over her lifetime in a given population.
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Q91: Plus or minus 2.58 standard deviations accounts