What Is a Clade

question 9

Multiple Choice

What is a clade?

• A)a group of organisms that all share a common ancestor
• B)an ancestor of a group of organisms
• C)a clan led by a dominant female member

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Definitions:

Percentiles

Statistical measures indicating the value below which a given percentage of observations in a group of observations falls.

Interquartile Range

A measure of variability, defined as the difference between the first and third quartiles, describing the middle 50% of a data set.

25th Percentile

A value below which 25% of the data falls.

75th Percentile

A value below which 75% of the data points in a dataset fall, used as a measure of dispersion.