Question

Like most characteristics of a population, WAIS-IV scores are distributed in a bell or normal curve. Which of thefollowing is an accurate characteristic of those types of curves?

a) Scores are evenly distributed across the population.
b) Scores are clumped around the midpoint The basic premise of a normal distribution is that approximately 2/3 of the population will appear within one standard deviation of the midpoint.
c) The curve resembles an "S."Incorrect. A normal distribution does not resemble an "S," but rather a wide upside down "U."
d) Scores are more common at the ends of the distribution.

Answer 1

An accurate characteristic of those types of curves is that the scores are clumped around the midpoint.

Explanation:

• The curves that represent the distribution of the population are subject to deviation with changes in the scores that are obtained after the WAIS IV test.
• The scores exhibited by these curves represent certain attributes related to the intelligence of the individuals that make up the population.
• These attributes are different in different versions of the WAIS test.