Examlex
_____, which probably evolved from infoldings of the plasma membrane, first appear in the fossil record about 1.8 million years ago.
Confidence Interval
A range of numerical values, calculated from analysis of sample data, which is likely poised to include an unidentified population parameter.
Confidence Interval
A statistical range, derived from sample data, that is likely to contain the true population parameter with a specified level of confidence.
Sample Size
The number of observations or data points collected in a sample.
Variable
An element, feature, or factor that is liable to vary or change.
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