Examlex
Nitrogen-fixing bacteria get both a place to live and energy while supplying nitrogen to a plant. What is this ecological relationship called?
Variance
The statistical measurement of the spread between numbers in a data set, indicating how much each number differs from the mean of the data set.
Negative
A value less than zero or a direction opposite to the expected or common.
Variance
A measure of the dispersion of a set of data points around their mean, indicating how spread out the data points are.
Sample Size
The number of observations or individuals in a subset of a population used for statistical analysis.
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