This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: A colleague generates a best-fit line through a set of data points and asks you to confirm its ... (Read 35 times)

berenicecastro

  • Hero Member
  • *****
  • Posts: 581
on: Jun 25, 2018
A colleague generates a best-fit line through a set of data points and asks you to confirm its usefulness and goodness-of-fit. You perform a root-mean-squared-error (RMSE) calculation and come up with a very small RMSE value.
 
  Based on this value you determine that the best-fit line
  A) deviates far from the data points.
  B) fits the data well.
  C) is useless for interpolation but valid for extrapolation.
  D) predicts a value that is too far from the actual value.

Question 2

Using linear regression, you compare two different methods for quantifying LDL in a serum sample. Which of the following is NOT acceptable practice when using regression lines?
 
  A) Calculation of the slope of the best fit line through the data points
  B) Extrapolation of points outside the standard curve
  C) Identification of the y-intercept using the slope of the standard curve
  D) Interpolation of points within the range of the standard curve


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

mcni194

  • Sr. Member
  • ****
  • Posts: 311
Reply #1 on: Jun 25, 2018
Answer to Question 1

B

Answer to Question 2

B


berenicecastro

  • Member
  • Posts: 581
Reply 2 on: Jun 25, 2018
Wow, this really help

billybob123

  • Member
  • Posts: 336
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

Congestive heart failure is a serious disorder that carries a reduced life expectancy. Heart failure is usually a chronic illness, and it may worsen with infection or other physical stressors.

Did you know?

ACTH levels are normally highest in the early morning (between 6 and 8 A.M.) and lowest in the evening (between 6 and 11 P.M.). Therefore, a doctor who suspects abnormal levels looks for low ACTH in the morning and high ACTH in the evening.

Did you know?

Blood is approximately twice as thick as water because of the cells and other components found in it.

Did you know?

Eating food that has been cooked with poppy seeds may cause you to fail a drug screening test, because the seeds contain enough opiate alkaloids to register as a positive.

Did you know?

There are immediate benefits of chiropractic adjustments that are visible via magnetic resonance imaging (MRI). It shows that spinal manipulation therapy is effective in decreasing pain and increasing the gaps between the vertebrae, reducing pressure that leads to pain.

Extent of agricultural activity across the planet (data from Foley et al. 2005). Extent of agricultural activity across the planet (data from Foley et al. 2005).
How to find the midpoint of a line segment How to find the midpoint of a line segment
How to fit an exponential model to data How to fit an exponential model to data
A model of the 70S ribosome based upon early structural data A model of the 70S ribosome based upon early structural data
Spectrum of Food Security Food insecurity and hunger are points along the continuum Spectrum of Food Security Food insecurity and hunger are points along the continuum
Find a quadractic equation that models the data in standard form Find a quadractic equation that models the data in standard form
Video: Energy inputs and release in glycolysis Animation

For a complete list of videos, visit our video library