SCENARIO 19-2 A Political Pollster Randomly Selects a Sample of 100 Voters

Multiple Choice

SCENARIO 19-2
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 Scenario 19-2,which expression best characterizes the p chart?

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