The Histogram Shown Below Gives the Annual Income of 35

question 18

Multiple Choice

The histogram shown below gives the annual income of 35 recent college graduates. What percent of the recent college graduates have an income of $54000 or more annually?

• A) 2%
• B) 7%
• C) 23%
• D) 67%
• E) None of the above.

---

Definitions:

Alpha Wave

A type of brain wave detected by electroencephalography (EEG) that indicates a state of physical and mental relaxation while being awake.

REM Rebound

The phenomenon where a person experiences increased amounts of REM sleep after being deprived of REM sleep in previous nights.

Sleep Spindles

Short bursts of brain activity that occur during stage 2 of the sleep cycle, associated with sleep maintenance and cognitive functions like learning and memory.

NREM-2 (N2)

A stage of sleep that is part of non-rapid eye movement sleep, characterized by specific brain and sleep features such as sleep spindles.