The Data Set: Ages of Dishwashers (In Years) in 20 $$\begin{array} { r r r r r r r r r r } 12 & 6 & 4 & 9 & 11 & 1 & 7 & 8 & 9 & 8 \\9 & 13 & 5 & 15 & 7 & 6 & 8 & 8 & 2 & 1\end{array}$$

question 28

Multiple Choice

The data set: ages of dishwashers (in years) in 20 randomly selected households $$\begin{array} { r r r r r r r r r r } 12 & 6 & 4 & 9 & 11 & 1 & 7 & 8 & 9 & 8 \\9 & 13 & 5 & 15 & 7 & 6 & 8 & 8 & 2 & 1\end{array}$$

• A) bell shaped
• B) uniform
• C) skewed to the left
• D) skewed to the right

---

Definitions:

Cardiovascular Mortality

Deaths that occur as a result of heart disease or complications related to heart conditions, often measured to assess the impact of public health interventions and lifestyle factors on heart health.

Prospective Cohort Study

A longitudinal study in which subjects are followed over time to observe outcomes, such as the development of diseases, after exposure to certain risk factors.

Systematic Sample

A sampling method where elements are selected from an ordered population using a fixed periodic interval.

Occupational Group

Refers to a categorization of jobs that individuals hold based on similarities in job duties, skill, education, and/or training requirements.