The Mean Household Income Is

question 153

Multiple Choice

The mean household income is

• A) the income that separates households into two equal groups.
• B) the most common household income.
• C) the percentage of total income received by the richest 20 percent of households.
• D) the average household income.

---

Definitions:

Wilcoxon Rank-sum Test

A non-parametric statistical test used to compare two independent samples to determine if they come from the same distribution.

Independent Samples

Two or more groups of samples that are not related or connected in any way in the context of an experiment or study.

Relative Frequency Distributions

A distribution where each value is expressed as a relative frequency or proportion of the total number of occurrences.

Normal Approximation

The process of using the normal distribution to approximate the distribution of a sample statistic.