« previous next »

Author Question: What does the CV calculated in Question 2 describe about the white cell counts? a. Accuracy b. ... (Read 78 times)

hbsimmons88

  • Hero Member
  • *****
  • Posts: 526
on: Jun 25, 2018
What does the CV calculated in Question 2 describe about the white cell counts?
 
  a. Accuracy
  b. Reliability
  c. Proper calibration
  d. Precision

Question 2

A patient's white blood cells (WBCs) are counted on an automated cell counter 10 times. The mean white count is 8000/mL, and the standard deviation (SD) is 300. What is the coefficient of variation (CV)?
 
  a. 0.04
  b. 2.6
  c. 3.8
  d. 26


amy.lauersdorf90

  • Sr. Member
  • ****
  • Posts: 327
Reply #1 on: Jun 25, 2018
Answer to Question 1

ANS: D
The CV is a measure of precision or how well a result can be reproduced. It allows comparisons of assays with different means and is a unitless number, although usually expressed as a percentage. Accuracy is how close a result is to the true value; proper calibration is required to obtain accuracy. Reliability is how well a method holds both accuracy and precision over time.

Answer to Question 2

ANS: C
 CV = (SD/mean)  100 = (300/8000)  100 = 3.8


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Children with strabismus (crossed eyes) can be treated. They are not able to outgrow this condition on their own, but with help, it can be more easily corrected at a younger age. It is important for infants to have eye examinations as early as possible in their development and then another at age 2 years.

Did you know?

Though newer “smart” infusion pumps are increasingly becoming more sophisticated, they cannot prevent all programming and administration errors. Health care professionals that use smart infusion pumps must still practice the rights of medication administration and have other professionals double-check all high-risk infusions.

Did you know?

In 1864, the first barbiturate (barbituric acid) was synthesized.

Did you know?

Barbituric acid, the base material of barbiturates, was first synthesized in 1863 by Adolph von Bayer. His company later went on to synthesize aspirin for the first time, and Bayer aspirin is still a popular brand today.

Did you know?

Your chance of developing a kidney stone is 1 in 10. In recent years, approximately 3.7 million people in the United States were diagnosed with a kidney disease.

A Splash of Color in a Frozen World of White A Splash of Color in a Frozen World of White
Major parts of the cell and the structures located inside the cell. Major parts of the cell and the structures located inside the cell.
Edmund Clark. Camp Five, Detainee's Cell, from the series Guantanamo: If the Light Goes Out, ... Edmund Clark. Camp Five, Detainee's Cell, from the series Guantanamo: If the Light Goes Out, ...
How to solve rate problems leading to fractional equations (Question 1) How to solve rate problems leading to fractional equations (Question 1)
White blood cells White blood cells
economic question economic question
Video: Interspecific Competition Relationship - Competitive & Niche Differentiation

For a complete list of videos, visit our video library