Instruction 18-3
a Political Pollster Randomly Selects a Sample of 100

question 102

Multiple Choice

Instruction 18-3
A political pollster randomly selects a sample of 100 voters each day for eight successive days and asks how many will vote for the incumbent. The pollster wishes to construct a p chart to see if the percentage favouring the incumbent candidate is too erratic.
$$\begin{array} { | c | c | } \hline \begin{array} { c } \text { Sample } \\\text { (Day) }\end{array} & \begin{array} { c } \text { Number Favouring } \\\text { Incumbent Candidate }\end{array} \\\hline 1 & 57 \\\hline 2 & 57 \\\hline 3 & 53 \\\hline 4 & 51 \\\hline 5 & 55 \\\hline 6 & 60 \\\hline 7 & 56 \\\hline 8 & 59 \\\hline\end{array}$$
-Referring to Instruction 18-3,which expression best characterises the p chart?

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

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Definitions:

Semiarid Zones

Regions characterized by light rainfall, usually between 10 and 20 inches per year, often resulting in scanty vegetation and a steppe climate.

Terrestrial Biomes

are large community units, distinguished by their predominant vegetation and are adapted to specific climate conditions on Earth, such as forests, deserts, and grasslands.

Alpine Tundra

A biome found in the high mountain regions of the world, above the tree line, characterized by windswept landscapes, low temperatures, and minimal vegetation.

Tree Line

The highest elevation or latitude line beyond which trees are unable to grow due to unsuitable environmental conditions, such as cold temperatures or lack of moisture.