Question

question 17 points 1
which one of the following is not an example of normal distribution?
household income in the us
heights of people

Explanation:

Define normal distribution characteristics

Using the Normal Distribution Properties knowledge point
A normal distribution is symmetric, bell-shaped, and centered around a single mean, where most observations cluster near the center and taper off equally on both sides.

Analyze heights of people

Human heights are a classic example of a normal distribution because most people are of average height, with symmetric and equal probabilities of being exceptionally tall or exceptionally short.

Analyze US household income

Household income in the US is highly skewed to the right (positively skewed) because a large portion of the population earns below or near the average, while a small number of high earners create a very long right tail.

Identify the non-normal distribution

Since household income is heavily skewed rather than symmetric and bell-shaped, it is not an example of a normal distribution.

Answer:

• (A) Household income in the US (Correct answer)
• (B) Heights of people