The Two Groups Representing the "Jawless" Fishes Are

question 73

Multiple Choice

The two groups representing the "jawless" fishes are:

• A) Cephalochordata and Placoderms.
• B) Chondrichthyes and Actinistia.
• C) Myxini and Petromyzontida.
• D) Dipnoi and Actinistia.
• E) Placoderms and Petromyzontida.

---

Definitions:

Sample Mean Difference

The statistical measure that calculates the difference between the average values of two sample groups.

Sample Sizes

The number of observations or data points selected from a population for analysis, which can affect the precision and reliability of statistical results.

Independent Samples

Two or more groups of data that are collected from different sources or populations and do not influence each other.

Normally Distributed Populations

Refers to groups or sets of data that follow a normal distribution, characterized by a symmetric bell-shaped curve where most observations cluster around the mean.