TABLE 17-2 A Political Pollster Randomly Selects a Sample of 100 Voters

question 50

Multiple Choice

TABLE 17-2
A political pollster randomly selects a sample of 100 voters each day for 8 successive days and asks how many will vote for the incumbent. The pollster wishes to construct a p chart to see if the percentage favoring the incumbent candidate is too erratic.
-Referring to Table 17-2, which expression best characterizes the p chart?

• A) In-control
• B) Increasing trend
• C) Decreasing trend
• D) Individual outliers

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Definitions:

Unrelated Variables

Variables in a study or experiment that are not connected to each other, having no direct influence or correlation.

Perception

The process by which individuals organize and interpret their sensory impressions to give meaning to their environment and experiences.

Regression Toward The Mean

The statistical phenomenon where extreme measurements or data points tend to be closer to the average upon subsequent measurements or in different samples.

Bowling Average

A statistical measure in the sport of bowling, calculated by dividing the total number of pins knocked down by the total number of games played.