When the Engine Is Running at Peak Efficiency, the Only

question 33

Multiple Choice

When the engine is running at peak efficiency, the only gas that is desirable to be at its peak level is ______.

• A)CO
• B)CO₂
• C)HC
• D)O₂

---

Definitions:

Box and Whisker Plot

A graphical representation of data that highlights the median, quartiles, and extremes of the dataset.

Five-number Summary

A statistical summary of a data set that includes the minimum, first quartile, median, third quartile, and maximum.

30th Percentile

A value below which 30 percent of the data falls, used to indicate the lower-middle range of a data set.

Interquartile Range

The difference between the 75th and 25th percentiles of a dataset, a measure of statistical dispersion.