Examlex
One of the two main angiosperm clades, the ____ has about 200,000 species. All members of this group have pollen grains with three grooves, and most have two cotyledons and net-veined leaves.
Simple Random Sample
A portion of a statistical population where every member in that portion is equally likely to be selected.
Mean Difference
The average difference between two sets of data. It is commonly used in comparisons of before and after measurements or between experimental and control groups.
Standard Deviation
An assessment of the range of variation or dispersion present in a set of numeric values, demonstrating how spread out the values are in relation to the average.
Mean
The arithmetic average of a set of values, calculated by summing all the values and then dividing by the total number of values.
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