Choose the Most Appropriate Answer for Each

question 43

Multiple Choice

Choose the most appropriate answer for each.
-arthropods

• A)two pairs of legs per segment
• B)Arachnids
• C)planarians, flukes, tapeworms
• D)Nematodes
• E)snails, squids, clams
• F)Mollusca
• G)sessile suspension feeders
• H)jellyfish and corals
• I)crustaceans, ticks, and insects
• J)polychaetes, earthworms, leeches
• K)sea urchins, sea stars

---

Definitions:

Variance

A measure of the dispersion or spread of a set of values, quantified as the average of the squared deviations from the mean.

Critical Value

A point on the scale of the test statistic beyond which we reject the null hypothesis; it defines the cutoff between significant and non-significant results.

Significance Level

Another term for level of significance, it represents the probability of rejecting the null hypothesis when it is actually true, typically denoted by alpha (α).

Standard Deviation

A statistical metric that quantifies the dispersion or variability of a dataset relative to its mean.