Three Different Samples Were Drawn from a Population

question 35

Multiple Choice

Three different samples were drawn from a population. The mean of variable AGE for the three samples was found to be 24, 27, and 21, respectively. What is the sampling variation in AGE?

• A) 3.0
• B) 8.0
• C) 9.0
• D) 1.5

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Definitions:

Echinoderms

A phylum of marine animals characterized by radial symmetry, a calcareous skeleton, and a complex water vascular system, including starfish, sea urchins, and sea cucumbers.

Arthropods

Invertebrate animals having an exoskeleton, a segmented body, and paired jointed appendages.

Flatworms

A diverse group of invertebrates belonging to the phylum Platyhelminthes, characterized by their flat, soft bodies.

Chelicerates

Arthropod group with specialized feeding structures (chelicerae) and no antennae; arachnids and horseshoe crabs.