An Analyst Is Assigned a Blind Quality Control Sample of Blood

question 27

Multiple Choice

An analyst is assigned a blind quality control sample of blood containing a drug metabolite. He tests ten separate portions and obtains the following data for the concentration in ug/mL:
25.2
24.8
26.6
27.0
24.0
26.0
25.5
26.3
24.9
23.9
Calculate the sample standard deviation and report to three significant figures. Use a spreadsheet or calculator.

• A) 0.995
• B) 1.06
• C) 9.95
• D) 1.00
• E) 23.0

---

Definitions:

Repetitious Verbal Mimicking

The act of consistently imitating speech sounds or words, often seen in developmental or neurocognitive disorders.

Autism Spectrum Disorder

A developmental disorder characterized by difficulties in social interaction and communication, along with restricted or repetitive patterns of thought and behavior.

Pervasive Developmental Disorder

A category of developmental disorders that involve delays in the development of many basic skills, often replaced by the term Autism Spectrum Disorder.

Tay-Sachs Disease

A genetic disorder that destroys nerve cells in the brain and spinal cord.