How Many Randomly Chosen Americans Are Usually Selected to Participate

question 57

Multiple Choice

How many randomly chosen Americans are usually selected to participate in national public opinion polls?

• A) between 500 and 1,000
• B) between 500 and 1,500
• C) between 1,000 and 1,500
• D) between 1,500 and 2,000
• E) between 2,000 and 3,000

---

Definitions:

Nonparametric Test

A type of statistical test that does not assume the data comes from a particular distribution.

Matched-Pairs Sample

A method where each subject is paired based on certain characteristics before being assigned to different treatments for comparison.

Frequency Distributions

Frequency distributions are summaries that show the number of occurrences of values within a dataset, often represented graphically in histograms or tables.

Spearman's Rank

A non-parametric measure of rank correlation that assesses how well the relationship between two variables can be described by a monotonic function.