The Following Table Presents the Number of Police Officers (Per

question 33

Multiple Choice

The following table presents the number of police officers (per 100,000 citizens) and the annual murder rate (per 100,000 citizens) for a sample of cities. $$\begin{array} { c c } \hline \text { Police Officers (per 100,000) } & \text { Murders (per } 100,000 \text { per yr) } \\\hline 1109 & 46 \\1238 & 44 \\1235 & 38 \\1298 & 40 \\1077 & 49 \\1076 & 42 \\\hline\end{array}$$ Compute the correlation coefficient between the per capita number of police officers and the per capita
Murder rate.

• A) -0.726
• B) -0.666
• C) 0.444
• D) -0.444

---

Definitions:

P-chart

A type of control chart used for monitoring the proportion of defective items in a process over time.

Control Limits

Boundaries in statistical process control that indicate the thresholds for when a process is in or out of control.

Process Capability Index

A statistical measure that quantifies how well a process can produce output within given specification limits.

Specification Limit

Predetermined bounds within which a product or process’s performance must fall to be considered acceptable, often used in quality control.