Archaefructus Is the Earliest Angiosperm Whole-Plant Fossil

question 28

True/False

Archaefructus is the earliest angiosperm whole-plant fossil.

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Definitions:

z

A statistical measure that represents the number of standard deviations a data point is from the mean.

Normally Distributed Random Variable

A variable that follows a Gaussian distribution, characterized by its bell-shaped curve, where the mean, median, and mode are all equal.

Mean

The arithmetic average of a set of values or distribution.

Variance

A measure of the spread of a set of numbers, indicating how much the values differ from the mean of the set.