SCENARIO 15-2
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. $$\begin{array} { c c }
\begin{array} { c }
\text { Sample } \
\text { (Day) }
\end{array} & \begin{array} { c }
\text { Number Favoring } \
\text { IncumbentCandidate }
\end{array} \
\hline 1 & 57 \
2 & 57 \
3 & 53 \
4 & 51 \
5 & 55 \
6 & 60 \
7 & 56 \
8 & 59
\end{array}$$
-Referring to SCENARIO 15-2, which expression best characterizes the p chart?
A)In-control
B)Increasing trend
C)Decreasing trend
D)Individual outliers

Question

SCENARIO 15-2
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. $$\begin{array} { c c } 
\begin{array} { c } 
\text { Sample } \
\text { (Day) }
\end{array} & \begin{array} { c } 
\text { Number Favoring } \
\text { IncumbentCandidate }
\end{array} \
\hline 1 & 57 \
2 & 57 \
3 & 53 \
4 & 51 \
5 & 55 \
6 & 60 \
7 & 56 \
8 & 59
\end{array}$$
-Referring to SCENARIO 15-2, which expression best characterizes the p chart?
A)In-control
B)Increasing trend
C)Decreasing trend
D)Individual outliers

Quizplus · Accepted Answer

The p chart would be characterized as "In-control" because the variations in the number of voters favoring the incumbent candidate across the 8 days are relatively small and do not show a consistent increasing or decreasing trend, nor do they indicate the presence of individual outliers.

SCENARIO 15-2 a Political Pollster Randomly Selects a Sample of 100

SCENARIO 15-2
a Political Pollster Randomly Selects a Sample of 100